Why is @ on your computer keyboard?

Ғылым және технология

What's the deal with @ (the at sign)? For too long the popular story that Ray Tomlinson saved @ from extinction by using it in email has spread as internet gossip. This story is false, and has been retold again and again without people asking some obvious questions like "Why was there an @ on Ray Tomlison's keyboard?" and "What led to @ being a part of the computer keyboard?"
The truth is that @ has a rich history that can be traced back to the 1300's, and since then has traveled through the Mediterranean world, across continental Europe, and into the printing houses of everyday Englishmen. @ originally was used to represent the word "arroba" (this is still the Spanish and Portuguese name for the character), a term for a unit of weight that was borrowed from the Arabs. Later @ came to be used in place of the phrase "at the rate of" in France and later England and Sweeden. This meaning held through the turn of the 20th century, and @ is still properly referred to as the "commercial at" or "commercial a". By the time typewriters became available to the general public @ was being included along with other commercial keys like the cent sign.
Around this same time electric data processing machines, like the kind made by Herman Hollerith, needed to encode letters and numbers into binary on punch cards. The code used here was BCDIC, which by the 1930's only held 40 symbols, @ not included. It was only when the ENIAC, BINAC, and UNIVAC came along and began to use teletypes as console output and later input that BCDIC was expanded. In 1953 @, along with several other symbols from the teletype keyboards, @ was officially included in BCDIC and was used in IBM's FORTRAN to represent the single quote.
When ASCII was developed in 1963 @ was again included at position 1000000, cementing it as part of general computer encoding. Wherever ASCII goes, @ goes along as well, and there was hardly a computer from that day on that was not compatible with this encoding.
So Ray Tomlinson's keyboard in 1971 had @ on it because @ was already a part of ASCII. His choosing @ didn't save it from being thrown out of the keyboard, although it did manage to give a use to the @ key for non-programmers of the day.
@ is the key with the most unique history on the entire keyboard, and it isn't going anywhere anytime soon.
Other great projects: www.notin.tokyo
Use the power of @ to send an email: inkboxsoftware@notin.tokyo
Thanks to Ray Tomlinson, 1941 - 2016

Пікірлер: 1 900

  • @thebigcheese1153
    @thebigcheese11535 ай бұрын

    It’s severely uncanny seeing “@“ within old texts.

  • @enkiimuto1041
    @enkiimuto1041 Жыл бұрын

    In Portuguese @ is still called arroba.

  • @chowder-hf8xm

    @chowder-hf8xm

    11 ай бұрын

    Spanish too!

  • @vencedor1774

    @vencedor1774

    11 ай бұрын

    In Spain too.

  • @Collidedatoms

    @Collidedatoms

    11 ай бұрын

    I like the name "Asperand". I have no idea where it came from but I like it because it pays homage to its similarity to the "Ampersand" while still having a name that distinguishes it from that and that sounds cool.

  • @Collidedatoms

    @Collidedatoms

    11 ай бұрын

    Then again, that means that "Arroba" is its historical name. So maybe that should be the name in English?

  • @IceBro

    @IceBro

    11 ай бұрын

    ​@@Collidedatoms Nah, language is always evolving and we use @ in a completely different way today.

  • @guillermogutierrez710
    @guillermogutierrez71011 ай бұрын

    Yep, before using a computer, I learned in school that @ was the symbol for the weight unit called arroba, which if I recall correctly is equivalent to 100 pounds. It is cool to think that in Spanish we still keep the original meaning of many words and symbols.

  • @rodrigohag

    @rodrigohag

    11 ай бұрын

    Moor's heritage

  • @erikkonstas

    @erikkonstas

    8 ай бұрын

    They teach that in school...?

  • @gerardsotxoa

    @gerardsotxoa

    7 ай бұрын

    Yes, about 50 years ago arroba was still very used in rural Mexico

  • @miguelj.5292

    @miguelj.5292

    5 ай бұрын

    In Portugal cork is still measured and traded in arroba, witch is just under 15kg /33 pounds

  • @dan-bz7dz

    @dan-bz7dz

    4 ай бұрын

    This is true. But surely this is not why it was introduced on the keyboard.

  • @Graham_Rule
    @Graham_Rule11 ай бұрын

    The first email system I used actually had "at" between the username and the host. But I'd used the @ symbol in paperwork for many years before that. It was a multiplication symbol symbol in 'commercial' use, e.g. (3 eggs @ 1 penny each = 3 pennies). The lack of that symbol would have held back the development of computing quite a lot.

  • @radarmusen

    @radarmusen

    11 ай бұрын

    Also in data sheets like 4Mhz @ 3v.

  • @KasumiRINA

    @KasumiRINA

    8 ай бұрын

    multiplication in computing is kinda ridiculous, as × is too confusing with x or Cyrillic х so obviously not used for that, and dot ⋅ is too small and nowhere to be found on kb... unlike / for division which makes sense as it's also a fraction symbol & you don't NEED ÷, there's no standardization as using asterisk for multiplying isn't ideal with how often it is used, say, in search engines or site code, i.e. if I input * twice here it will make the word look like *this*

  • @Sammysapphira

    @Sammysapphira

    5 ай бұрын

    ​@@KasumiRINA * is also used to create a pointer in C and C++ while simultaneously having * as multiplication.

  • @snatcc

    @snatcc

    5 ай бұрын

    Yeah,” @“* IS *cringe

  • @alexanderborsch5978

    @alexanderborsch5978

    5 ай бұрын

    Found here the explanation I was looking for

  • @MrCheeze
    @MrCheeze Жыл бұрын

    Since you mentioned the cent sign... it's funny that it was cut in favour of @, despite having a much more obvious and common use... and in fact has all but died out as a result. I suppose the reason ¢ was excluded in the first place was that on a typewriter, you could make one with c-backspace-slash. So it never got a dedicated key, and therefore never made it into basic ascii...

  • @reversev9778

    @reversev9778

    Жыл бұрын

    It also doesn’t help that because of the ¢ sign’s obvious use, it wasn’t as easy to assign new uses to. The @ sign’s lack of an obvious use made it much easier to use as a symbol for whatever you needed.

  • @WohaoG

    @WohaoG

    Жыл бұрын

    #JusticeForCent

  • @nikdog419

    @nikdog419

    Жыл бұрын

    And now cents are practically worth less. Really need to copy Scandinavian countries and make the dime the smallest denomination of the USD. Though current inflation, we're about ready for the dollar to be the smallest denomination of USD.

  • @zym5435

    @zym5435

    Жыл бұрын

    plus you can always just do $0.01 as opposed to 1¢, for example, if you really needed a cent value for whatever reason.

  • @reversev9778

    @reversev9778

    11 ай бұрын

    @@0011peace I’m not saying reusing symbols didn’t happen, just that it wasn’t preferable.

  • @lumipakkanen3510
    @lumipakkanen351011 ай бұрын

    Fun fact. In the early days of the Internet in Finland we used to call the "@" symbol "miukumauku" due to its resemblance of a curled up cat. ("Miukua" and "maukua" both mean "to meow".) Haven't verified this so it might've been only the circle of people around me and it's fallen out of favor anyway. These days the symbol is pronounced "ät".

  • @MottyGlix

    @MottyGlix

    11 ай бұрын

    In contemporary times in Israel the @ symbol is called "strudel" (as in the pastry) when reciting e-mail addresses.

  • @mskiptr

    @mskiptr

    11 ай бұрын

    Here in Poland it's called "małpa", meaning a monkey.

  • @StYxXx

    @StYxXx

    11 ай бұрын

    @@mskiptr In German it's also called "Klammeraffe", which could be translated as "clinging monkey" since it looks like the tail of one grabbing a branch

  • @U20E0

    @U20E0

    11 ай бұрын

    it’s called a dog in russian

  • @jannovotny4797

    @jannovotny4797

    11 ай бұрын

    In Czech it's called a "zavináč", coming from the verb "vinout se", which means to curl around. Zavináč is also the name of a pickled fish though

  • @Krasniye
    @Krasniye11 ай бұрын

    I think another interesting use from the @ sign is in aviation. In the days that ATC was done using purely pen and paper the @ symbol was the go to symbol for "at and maintain". It's still used to this day. Not an origin story by any means but an interesting side note.

  • @trevormiddleton
    @trevormiddleton11 ай бұрын

    I worked, briefly, in a sales office around 1978. We fulfilled orders for plastic bags: carrier bags, refuse sacks, etc. The invoices we sent out to customers always included the @ symbol before the price per unit (usually per thousand bags). When I first saw an email address, at university in the 80s, it seemed natural that the @ symbol should be used, because I was already familiar with it.

  • @glen1555

    @glen1555

    11 ай бұрын

    Yes. 15 dozen at 4 shillings a dozen. Or 15 doz @ 4/- doz

  • @trevormiddleton

    @trevormiddleton

    11 ай бұрын

    @@glen1555 Those were still the days of the typing-pool, so our invoices were all handwritten, only letters being designated ‘important’ enough for typing. We used the abbreviation ‘m’ for ‘thousands’, and I still remember the descriptive terms for the bags; for instance: 15m TOTPOH printed @ £5/m … £75 would be 15,000 Turn Over Top, Punch-Out Handle carrier bags printed with the previously agreed artwork @ £5 per 1, 000 … £75 The artwork and printing were agreed on during the earlier part of the sales process.

  • @glen1555

    @glen1555

    11 ай бұрын

    Typing pools - i'd forgotten about them. Rat a tat tat all day long. Presided over by a Dragon woman.

  • @trevormiddleton

    @trevormiddleton

    11 ай бұрын

    @@glen1555 Exactly that, yeah. The only computer was a dedicated microcomputer in the Accounts department, presided over by the formidable Doris. And let’s not forget the telex machine that looked like something out of Star Trek TOS, and was the closest we had to email. All gone now. By the time I arrived at university in the late 80s, after taking a break from education, there were Macs in the Arts Faculty, networked PCs, and we students each had our own email address!

  • @snooks5607

    @snooks5607

    11 ай бұрын

    surprised I haven't yet seen it commented that in many countries unit prices were often and still are sometimes marked with the french word "á" (depending on context meaning to/in/at/by/with). actually found some pages saying that might actually be the origin of @ instead of amfora even though it was used for both

  • @rairaur2234
    @rairaur2234 Жыл бұрын

    Came for a background little story, stayed for a well-done brief early computers history. Was shocked it's not some already established documentary channel! Great work! Cheers.

  • @ItsVasl

    @ItsVasl

    11 ай бұрын

    yes, this is an amazing video!

  • @ram0166

    @ram0166

    11 ай бұрын

    A history of IBM disguised as a video about @

  • @dan-bz7dz

    @dan-bz7dz

    4 ай бұрын

    If by well-done. you mean blatantly wrong

  • @FLPhotoCatcher

    @FLPhotoCatcher

    4 ай бұрын

    You can say th@ again.

  • @gufu21

    @gufu21

    4 ай бұрын

    @@dan-bz7dz Can you explain what in this video is wrong?

  • @Wmann
    @Wmann Жыл бұрын

    This is honestly well done. The editing, documentation, script, your presentation of them, it’s almost on par with popular related KZreadrs today. Keep going! You’re doing great.

  • @roxaskinghearts

    @roxaskinghearts

    11 ай бұрын

    Yeah but not because of emails was clickbait as emails are just what that evolved into and now adays emails are the reason that is there

  • @LUKEUNGUS

    @LUKEUNGUS

    11 ай бұрын

    Cap

  • @samueleproiettimicozzi8134

    @samueleproiettimicozzi8134

    11 ай бұрын

    ​​@@roxaskinghearts nah, the thumb is just completing the title, since the whole video could be clickbait by having a title like this and then everything the video says is "because of emails!". It's a great way to introduce you to the topic, many well-written articles and even academic researches follow this style

  • @roxaskinghearts

    @roxaskinghearts

    11 ай бұрын

    @@samueleproiettimicozzi8134 yeah its called click bait liars deserve no respect o yeah i get it everyone els is so easy to fool with nonsense like this and would overlook it or say nothing about it see for someone to claim politician they have to understand nuance of our society today and how it is ran not children who sit there and defend their own idiosyncrasies and i get it im just calling it as i see it

  • @samueleproiettimicozzi8134

    @samueleproiettimicozzi8134

    11 ай бұрын

    @@roxaskinghearts how is it clickbait if the reason the @ sign is on your keyboard really isn't emails?

  • @TheXBoy5
    @TheXBoy58 ай бұрын

    An interesting use of @ was done by spanish speakers. Most words in spanish have a gender (street is femenine and tree is masculine). Then there's "everyone". "Todas" is explicitly feminine, so it's only used when "everyone" is female. "Todos" is masculine and can be used for male or mixed groups. However, some people liked to text "tod@s", since @ looks like an a and an o. It was mostly so you didn't have to type "todos y todas" while still taking girls into account. Nowadays most people replaced the @ with e, so they say and text "todes". Using e has a political tone to it, while using @ did not.

  • @DestopLine

    @DestopLine

    7 ай бұрын

    Literally nobody uses the e, I've never seen anyone in real life using it, most people say todos, but some people still use @

  • @Ayverie4

    @Ayverie4

    7 ай бұрын

    As an English speaker learning Spanish in the age of "tod@s", before the "e" came into practice, I felt the political undertone. I always felt it was stupid, as "todos" is already inclusive. Just as "man" once was in English. We are all "men". That is our species.

  • @Ledabot

    @Ledabot

    7 ай бұрын

    How many men you sleep with

  • @gerardsotxoa

    @gerardsotxoa

    7 ай бұрын

    He's lying, most people is not retard enough

  • @KEVINDAVIDBALBUENASALVADOR

    @KEVINDAVIDBALBUENASALVADOR

    6 ай бұрын

    @@DestopLine some people do, but as he said, it has the political implication of being 'inclusive' in the modern sense. I've seen it more often spoken than written though.

  • @Hopeless_and_Forlorn
    @Hopeless_and_Forlorn11 ай бұрын

    This video impresses upon me the technological changes I have lived through in my eighty years so far. In 1960 six weeks of my military training to be an aircraft weapons mechanic was dedicated to learning basic electricity. In the field in 1962, one of the new tools we used was an early, automated tester for aircraft and component electrical wiring. My introduction to digital, it was motivated by a five-by-eight punch code in Mylar tapes fed through an optical reader. As a civilian aircraft mechanic I leaned first vacuum tube and then solid-state electronics. The advent of computerized autopilot systems, digital radar and flight management and navigation systems in the early 1980s just about brought me up to date. Today, I call one of my daughters when I need help getting my iPhone to do what I need.

  • @firstnamerequiredlastnameo3473

    @firstnamerequiredlastnameo3473

    Ай бұрын

    You're talking my history. Been there, also.

  • @austinschmuck7814
    @austinschmuck781411 ай бұрын

    As someone who collects typewriters (owning some from 1912 to the 1970s, Including 2 underwood typewriters identical to the one shown in this video), I've often wondered why there's an @ symbol. Thanks for clearing it up.

  • @louistournas120

    @louistournas120

    11 ай бұрын

    I still don't understand why there is an @ on typewriters. What did they use it for in the 20 th century?

  • @AttacMage

    @AttacMage

    11 ай бұрын

    @@louistournas120 like it said in the video. commercial use.

  • @MoreRice28

    @MoreRice28

    11 ай бұрын

    c@

  • @someonespadre

    @someonespadre

    11 ай бұрын

    @@louistournas120 typed invoice, for example, Widgets 2 @ $1.00, etc

  • @spimbles

    @spimbles

    11 ай бұрын

    woah hey guy calm down, save some women for the rest of us

  • @blakem2902
    @blakem290211 ай бұрын

    side note: @ (the at symbol) is still called "arroba" in the spanish language

  • @annalourdesbatista1473

    @annalourdesbatista1473

    11 ай бұрын

    Also in portuguese

  • @maximinix

    @maximinix

    11 ай бұрын

    In French: arobase, arobas, arrobase, arrobe, arobaxe, arrobas, or snail (because it looks like a snail shell).

  • @quillmaurer6563
    @quillmaurer656311 ай бұрын

    I was wondering why this was on my 1959 (?) vintage typewriter, this clears it up. Playing with an old typewriter has offered a lot of insight into the design and function of modern keyboards, answered a lot of questions I'd never thought to ask about why they are the way they are. "Caps Lock" evolved from "Shift Lock," which mechanically locked the shift button down, the shift key physically shifting the entire assembly down to use different characters on the type bar (the name doesn't make much sense in modern context but makes sense given this). The "QWERTY" layout isn't to make people type slower as often said, but to have it so that most of the time letters from left and right alternate to prevent the type bars colliding - the one oversight is the proximity of "T" and "H," those are too close together and jam on a regular basis.

  • @InkboxSoftware

    @InkboxSoftware

    11 ай бұрын

    In addition, on early computers the caps lock key also locked in the pressed position when it was active, mimicking typewriters

  • @quillmaurer6563

    @quillmaurer6563

    11 ай бұрын

    @@InkboxSoftware Interesting - I wonder how similar early computer keyboards looked to typewriters? Though of course later typewriters, especially electronic ones, looked a lot more like computer keyboards than the earlier typewriters that we all visualize. One interesting comparison between the modern "Caps Lock" and typewriter/early computer "Shift Lock" is that Caps Lock only applies to letters, has no effect on other characters: ABC123, while shift lock would give the secondary character for all keys: ABC!@# While writing that, I thought of yet another interesting thing - on modern keyboard the 1 key doubles as "!". My 1959(?) vintage Smith Corona mechanical typewriter has neither of those characters, presumably using "l" for "1" and ' [backspace] . for "!" This perhaps explains why modern keyboards, needing to add both, have "1" and "!" as the same key, the others unchanged.

  • @cmyk8964

    @cmyk8964

    6 ай бұрын

    Don’t forget the “CDE” cluster...

  • @cmyk8964

    @cmyk8964

    6 ай бұрын

    ​@@quillmaurer6563Exclamation point was, to my knowledge, printed as apostrophe + period. On typewriters as well as in ASCII, the apostrophe was straight instead of curly (like the ones that MS Word replace your boring ASCII quotes with).

  • @1toak

    @1toak

    4 ай бұрын

    @@cmyk8964 Yes, that's correct for the exclamation point. To be more exact with how that works technically is you type the apostrophe, then hit the backspace, and then finally type the period. The reason for the backspace is because each time you type a key on the typewriter, the carriage advances one space forward. On a vintage mechanical typewriter, the backspace was not a "delete the previous character" as it is today in digital keyboards, but instead, moved your current position back one space. Source: I own a vintage Royal typewriter from 1959

  • @MatthijsKoelewijn
    @MatthijsKoelewijn11 ай бұрын

    In the Netherlands(dutch), the symbol "@" is referred to as the "apenstaartje," which translates to "monkey's tail." The name "apenstaartje" is derived from the word "aap" meaning monkey, and "staart" meaning tail. Therefore, when combined, it represents the tail of a monkey.

  • @tobe2240

    @tobe2240

    10 ай бұрын

    In Poland it is literally called monkey, and there is no alternate reference AFAIK.

  • @stickyfox

    @stickyfox

    9 ай бұрын

    The ampersand & makes a great duck in 8-bit shooting gallery games too.

  • @win_ini

    @win_ini

    8 ай бұрын

    ​@@tobe2240małpa I know it all too-well.

  • @carlhilber2275

    @carlhilber2275

    8 ай бұрын

    its actually called ampersand in English, but is colloquially referred to as "at"

  • @DestopLine

    @DestopLine

    7 ай бұрын

    @@carlhilber2275 Isn't that &?

  • @spilt-milkie
    @spilt-milkie Жыл бұрын

    @h yes, the @ symbol

  • @lexnastin9011

    @lexnastin9011

    Жыл бұрын

    I think you meant: @h yes, the a symbol

  • @Scute_King

    @Scute_King

    11 ай бұрын

    ​@@lexnastin9011 I think you me@nt : @h, the @ symbol

  • @purpleisfizzy

    @purpleisfizzy

    11 ай бұрын

    Oh yes, the o symbol

  • @chairwood

    @chairwood

    11 ай бұрын

    b@ 🦇

  • @foxcraft5215

    @foxcraft5215

    11 ай бұрын

    F@

  • @4rumani
    @4rumani Жыл бұрын

    Huh, so that's why we call it an arroba in Spanish to this day...

  • @perkynson

    @perkynson

    11 ай бұрын

    I think so?

  • @rezenhasqn8308

    @rezenhasqn8308

    11 ай бұрын

    in Brazil too

  • @CerinAmroth

    @CerinAmroth

    11 ай бұрын

    In Portuguese too

  • 11 ай бұрын

    In French too where it called ‘arobas’.

  • @seeranos
    @seeranos11 ай бұрын

    Another big reason the @ symbol stuck around is because it was used in some assembly instruction sets to modify the addressing mode for registers, essentially telling the computer, “the value here isnt just a value, its a location in memory”. This is also probably part of the reasoning for making the @ symbol standard for email addressing.

  • @seeranos

    @seeranos

    9 ай бұрын

    @@gabemorales7814 Ah yeah I guess I'm mostly relying on my experience in MIPS for this info

  • @Toksyuryel

    @Toksyuryel

    8 ай бұрын

    Pointers!

  • @lwilton

    @lwilton

    3 ай бұрын

    @@seeranos Doesn't have to be MIPS. We did the same thing in Burroughs from the 1960s. Someone above mentioned the DEC-10 did the same thing.

  • @elin4364
    @elin436411 ай бұрын

    this video made me remember that @ in swedish is actually pronounced "snabel-a" which literally means trunk-a (as in the trunks elephants have) but I haven't heard basically anyone call @ that in years. I guess "at" is 2 fewer syllables than "snabel-a" so its a lot easier to just call it the English "at" especially when @ comes up everywhere nowdays. idk thats fascinating to me, not only has the choice to use @ in email addresses affected the internet but also how people use language

  • @unitedstatesofamerica9239
    @unitedstatesofamerica9239 Жыл бұрын

    As a programmer, I use the @ symbol to create commands for bug testing. Mostly because it's so easy to find when combing through thousands of lines of code.

  • @BogoblinGamer

    @BogoblinGamer

    11 ай бұрын

    As a perl programmer, this doesn't work for me

  • @torinnbalasar6774

    @torinnbalasar6774

    11 ай бұрын

    If you're in Java, it's heavily used to format Javadoc documents, and iirc is also used to help the compiler for JUnit tests.

  • @none-ro9dz

    @none-ro9dz

    11 ай бұрын

    also python decorators

  • @southernflatland

    @southernflatland

    11 ай бұрын

    Meanwhile, I'm a sane person that uses the more recognized but least used letter Q for any test routines while debugging.

  • @SergeantExtreme

    @SergeantExtreme

    11 ай бұрын

    @@southernflatland Q looks too much like O. It could easily be passed over when viewing lines of code, especially if you're tired.

  • @Miniclash
    @Miniclash Жыл бұрын

    Funny to note that the @ sign in French is called "Arobase" (pronounced ah-rho-baz) which sounds like it comes from that unit of measurement you mentioned in the video.

  • @sacordovaplata

    @sacordovaplata

    11 ай бұрын

    In Spanish is "arroba"; it never lost its original pronunciation and meaning. now it can mean "at" and "arroba" depending on the context

  • @pablocasas5906

    @pablocasas5906

    11 ай бұрын

    As others said, as a Spanish speaker I can confirm, @ is still called arroba

  • @My_Old_YT_Account

    @My_Old_YT_Account

    11 ай бұрын

    In Québec we say "A commercial" (commercial A) Funny how language changes by just being an ocean away

  • @KrissFliss

    @KrissFliss

    11 ай бұрын

    In Norwegian its called "Alfakrøll" the direct translation to English would be "alphacurl" or "alpha curl". Alpha is the unit of one, we also used it in the comercial space.

  • @glock4455

    @glock4455

    11 ай бұрын

    In portuguese @ is arroba, just like the video. And the arroba unit is used to this day and is equal to 15kg

  • @supertron6039
    @supertron603911 ай бұрын

    I have heard many people call it "at the rate" and I never questioned it until now. Makes a lot more sense in the commercial world, especially the example of France you gave.

  • @xarteonarts8446
    @xarteonarts844611 ай бұрын

    The reveal of IBM got me shocked, it's always a great thing to discover the beginning of very important names like the big companies that changed the world back then. You've got a new sub man, love your content

  • @glasstuna

    @glasstuna

    11 ай бұрын

    Say potato.

  • @xarteonarts8446

    @xarteonarts8446

    11 ай бұрын

    @@glasstuna potato, why?

  • @jrstf
    @jrstf11 ай бұрын

    Your picture of the PDP-10 (KA10) computer is all the reason needed for @ to stick around, it is used for indirect addressing in MACRO-10 assembly language. Unfortunately, the back arrow character was removed in 1967 but we adapted by switching to the less descriptive "=", and replacing back arrow with "_" in ASCII was an improvement, and at that time lower case was not commonly available so there were few other candidates for removal.

  • @lawrencedoliveiro9104

    @lawrencedoliveiro9104

    11 ай бұрын

    Early ASCII had “↑” which was replaced with “^”, and “←” which was replaced with “_”. DEC’s assemblers for both PDP-10 and PDP-11 families used “@” for indirect addressing modes. The 18-bit and 12-bit machines, being simpler, just put an “I” modifier in the instruction.

  • @bxdanny

    @bxdanny

    11 ай бұрын

    @@lawrencedoliveiro9104 And for some reason, Commodore stuck with those left-facing and upward-facing arrows for characters 95 and 94, respectively, on their 8-bit computers. And early versions of Microsoft BASIC (not the Commodore version) used character 95 (left-arrow, which became underscore) for character delete, and "@" for line delete.

  • @HenryLoenwind
    @HenryLoenwind11 ай бұрын

    Just one small correction: Just because a character is in ASCII doesn't mean it will have a key on all keyboard layouts. There are plenty of computers with more limited keyboards and (for PCs) keyboard layouts that e.g. don't include ^, ~ or `. So @ could have easily been dropped if there was no common use and available key for it. There are only 47 character-producing keys on a PC keyboard afterall. Those plus space are 95 different characters, exactly the same number as ASCII has printable characters. Including any additional character (e.g. § ¶ ◄ µ € ² ³) would kick one of those off.

  • @KairuHakubi

    @KairuHakubi

    11 ай бұрын

    yeah it could easily have been replaced if nobody wanted it, but did want something else.

  • @lawrencedoliveiro9104

    @lawrencedoliveiro9104

    11 ай бұрын

    Every computer from about the 1970s/80s onwards supports ASCII, except old IBM mainframes and other mainframes that wanted to be compatible with them. Certainly ASCII support has always been universal among microprocessor-based computers, as well as “minicomputers” from the like of DEC, DG and others. And of course if a computer was going to run a Unix OS, then ASCII support was a requirement.

  • @James_Knott

    @James_Knott

    11 ай бұрын

    Yep. The ever popular Teletype model 33, commonly used with computers, was upper case only.

  • @combusean

    @combusean

    11 ай бұрын

    I'm really curious to see what these keyboards are that redefine what's above 6, because anything doing this would be out of spec with USB HID, in addition to breaking keyboard layout standards on the PC that have existed long before USB. What's on the keyboard are the printable 7-bit ASCII characters which are the original definition, the 8 bit characters didn't come until much later. International keyboards do that and more (like the euro symbol) with AltGr.

  • @Anonymous-df8it

    @Anonymous-df8it

    10 ай бұрын

    You can add another one by making shift+space distinct from space

  • @feudist
    @feudist11 ай бұрын

    Well done. As a boomer who didn't get his first computer until age 39, I still remain gobsmacked at the fingertip availability of the sum of humanity's knowledge down to the most granular level. In your pocket.

  • @christopherellis2663

    @christopherellis2663

    4 ай бұрын

    As a 74 year old, I wonder about people who still won't consult it.

  • @ranulfdoswell
    @ranulfdoswell11 ай бұрын

    The thing I've never understood is why US PC keyboards moved the @ sign to 2, replacing " which was previously on that key on typewriters and early computers. Even its position in ASCII is due to its position on the keyboard when the shift key just used to XOR the key value with 0x20. A lot of Asian countries followed the position on US keyboards, but most of Europe including the UK stuck with the traditional positions. They question is why did anyone move it at all? The earliest "old" computers (that I can find pictures of) with @ on 2 seem to be DEC (VT52 and VT100 onwards) and obviously the IBM PC. But many other common terminals such as the adm-3a had " on 2. Did IBM copy DEC and if so why did DEC move it? The VT52 (1974) has @ on 2, but the older VT05 (1970) has " on 2.

  • @krashd

    @krashd

    11 ай бұрын

    That bugs the shit out of me, every few years I'll come across an OS where the input is set to US English and typing any command featuring an @ gets screwed up, leading me to scratch my head for a moment or two until I remember to use SHIFT-2 for it.

  • @andynl6443
    @andynl644311 ай бұрын

    Also, back in the days no fancy computer screens and before email was a thing: in order to display text "at" an exact location on screen the @-symbol was used, e.g. program instruction PRINT @(5,10),"Hello World" - shows text at position 5 on line 10.

  • @mattwo7
    @mattwo711 ай бұрын

    You should cover the history of the * and # keys, including their use on phones.

  • @southernflatland

    @southernflatland

    11 ай бұрын

    The # symbol is originally known as the octothorpe symbol. In more modern times, it's become known as the hash mark, number sign, and pound sign. I personally refuse to call it a 'hashtag', as it's blasphemy upon the origins of the symbol. It's an octothorpe, look it up.

  • @deki9827

    @deki9827

    11 ай бұрын

    ​@@southernflatland I call it a hash. It's easier than fucking octothorpe and it sure as fuck isn't a hashtag.

  • @mattwo7

    @mattwo7

    11 ай бұрын

    @@southernflatland I am aware of its origins as being interchangeable with ℔ which is how it earned the name "pound sign" in the first place and how it used to be known as the "number sign" for its use with competition placement designations and numerical designations but most people aren't aware. Not to mention its use in voicemail systems. Also it has historically been known as a "hash" and "hash sign" as well. Also "sharp" because it resembles ♯ , hex in Singapore and Malaysia and square. which is actually ⌗ and not # . There's a whole bunch of other slang terms for it too.

  • @RenderingUser

    @RenderingUser

    11 ай бұрын

    ​​​​​​​@@southernflatlandot called hash It's called sharp I call it hash tho No one wants to say a mouthful of a word every time they refer to this symbol No ones really gonna understand what an octothorpe is anyway

  • @southernflatland

    @southernflatland

    11 ай бұрын

    @@RenderingUser I'm fine with calling it the 'pound' symbol, that's what I originally learned it as anyways. It's one syllable anyways. Like who the hell decided to change and complicate that into the two syllable form 'hashtag' anyways? Changing words to more complicated words (more syllables) for no good reason makes absolutely no sense.

  • @shaihulud4515
    @shaihulud451511 ай бұрын

    Dude, don't know how you did it - it's entertaining, informative, accurately researched and presented in a appropriate way (in terms of time vs. information density). I just had to like and subscribe in one go :)

  • @Mankepanke
    @Mankepanke11 ай бұрын

    In Swedish, the @ symbol is called "snabel-a", which means "[elephant's] trunk a".

  • @higginsisaac
    @higginsisaac11 ай бұрын

    Usually I kinda just space out while watching videos on topics like this but this is so well made that it captured my attention entirely

  • @AxR558
    @AxR55811 ай бұрын

    Interesting that you mention @ being used to mean versus. It kind of does in US sports like basketball where you'll see matches advertised on TV as Team A @ Team B, I'm sure they actually mean "at" literally, but it's kind of funny how things come back around.

  • @KairuHakubi

    @KairuHakubi

    11 ай бұрын

    I mean hell, versus is latin for 'towards'

  • @Brian3989
    @Brian398911 ай бұрын

    My understanding is the @ symbol on typewriters in England came from commercial usage, where in a list of prices you could have ten items priced at 9 pence, 10@9p=90pence.

  • @neilwilliams2907

    @neilwilliams2907

    11 ай бұрын

    It's not much of an abbreviation though is it? They could have used it for a longer word than the two letter 'at'. I mean, they both use about the same amount of ink. Not really any kind of saving.

  • @nealjroberts4050

    @nealjroberts4050

    7 ай бұрын

    @neilwilliams2907 If you're typing lists it saves a lot of ink regardless. Printing caused a lot of words to shrink in spelling.

  • @Check_001
    @Check_00111 ай бұрын

    So as others mention how this symbol is called in their languages, in Russian it's called "sobaka", literally translating as "dog". Somehow unlike finnish people, it appeared to look like a curled up dog instead of a cat here and a bit resembling bark being called "at" in English XD

  • @fitmotheyap

    @fitmotheyap

    11 ай бұрын

    Meanwhile in my language it's called "monkey" Slavic languages do have some oddities

  • @dmitryburlakov6920

    @dmitryburlakov6920

    9 ай бұрын

    Considering that, if this video is correct, the @ sign appeared in Cyrillic long time ago, I wonder how it got into Slavic languages with all weird names. But it's not only about Slavic as it seems, many many languages have weird names. In Belarusian and Ukrainian it's a Snail, as well as in... Italian. In Ukrainian it's also a puppy. Bulgarian and Polish think it's a monkey. Turkic languages went crazy too: Kazakh -- Moon's ear, Turkish - meat (?), Uzbek - puppy again! Tatar - dog, but I guess it's Russian influence. Almost like the symbol came from nowhere and everyone invented their own names. I guess that's because it's not a letter really, not a word, but just it, a symbol.

  • @dontcallmethat7240

    @dontcallmethat7240

    2 ай бұрын

    and despite at-sign being non-existant in Soviet Union before appearance of desktops, nobody really knows why is it called dog. I like to say 'commercial at' is borrowed from Tatar et/эт - dog, cause why not

  • @anon_y_mousse
    @anon_y_mousse Жыл бұрын

    I've always liked the at symbol, and it never made sense that in C and languages based on it that they went with ampersand to indicate address of. I guess if e-mail had become popular before C was designed that it would be the other way around, but for my own language I decided to break from the convention that C uses and instead use the at symbol for my address of operator. I think this video vindicates my choice.

  • @zandgall1837

    @zandgall1837

    11 ай бұрын

    woah you're right, that's the perfect use for it, i never would've thought about that

  • @Kycilak

    @Kycilak

    11 ай бұрын

    @ would be the perfect choice for dereferencing operator more then the address of operator in my opinion. If we had a pointer p, we could look what at the address p points to with @p instead of *p. This would also maybe clear some confusion with using * to declare pointers and also to dereference them which are unrelated.

  • @anon_y_mousse

    @anon_y_mousse

    11 ай бұрын

    @@Kycilak I don't disagree that it is confusing to use the same symbol to declare a pointer and dereference it, but I'd actually rather not use @ for dereferencing, and instead look to a new symbol, such as $. Consider that what dereferencing really is, is acquiring the value at that address. Obviously using such a symbol would be a bit fraught, but for internationalization of my language it could be possible to use any country's currency symbol.

  • @jrstf

    @jrstf

    11 ай бұрын

    @@anon_y_mousse - My suspicion is the primary reason for PERL to have been discarded is because they used $ to dereference, probably the ugliest character possible.

  • @anon_y_mousse

    @anon_y_mousse

    11 ай бұрын

    @@jrstf Except that it didn't use it to dereference, but rather to denote that it was a variable, period. Using it for literally every manipulation of a variable is certainly tiresome.

  • @RJSchex
    @RJSchex11 ай бұрын

    Two other uses of the "@" symbol:: (1) the TRS-80 Color Computer used "@" after "PRINT" to print a message at a specific location on the screen. (2) Most early Intellivision video games featured "@" on the title screen, used as a copyright (©) symbol.

  • @YoelFievelBenAvram

    @YoelFievelBenAvram

    11 ай бұрын

    @ has also been the default avatar for games with rogue like graphics.

  • @MarkFraserWeather

    @MarkFraserWeather

    11 ай бұрын

    BBC BASIC used the @ in the @% system variable to control the print format.

  • @Pooter-it4yg
    @Pooter-it4yg11 ай бұрын

    In addition to its meaning of "per" it also sometimes stood for "approximately". Those of us over 50 can still remember these uses.

  • @Rocketsong

    @Rocketsong

    5 ай бұрын

    I'm over 50, and the tilde ~ has always been used to mean approximately for me.

  • @jasonfullerton7763

    @jasonfullerton7763

    4 ай бұрын

    The use of ~ as "approximate" comes from the proper mathematical symbol, which is a squiggly equal sign and is not on a keyboard.

  • @TrevinAdams
    @TrevinAdams Жыл бұрын

    Great job taking a long history and boiling it down to the key points. Well done!

  • @eddymison3527
    @eddymison352711 ай бұрын

    In my country the @ symbol meant 'alias' before email became popular in the 90s, by then it became 'at' as it is known today.

  • @Kiroto50
    @Kiroto5011 ай бұрын

    Compared to your usual content, this video absolutely EXPLODED. Congratulations!

  • @alphacompton
    @alphacompton11 ай бұрын

    That was fascinating. Thanks for making a vid about it. Didn't realize @ was around for so long and not even used in in writing form before computers were a thing.

  • @andreimircea2254
    @andreimircea225411 ай бұрын

    @ in other languages (like Dutch and Romania) is called “arond”. I was shocked to learn that English-folks were calling @ “at”.

  • @user-np9yf6rz6g

    @user-np9yf6rz6g

    2 ай бұрын

    Always used it notes handwritten shorthand meaning around - as in " I'll be home @ 9:00" is that a connection to arrond?

  • @delscoville
    @delscoville11 ай бұрын

    There was one on my old VIC 20 keyboard too, but there was also an English pound sign. Both had little use for me back then, They carried over to the Commodore 64, which uses an identical keyboard. Also the Commodore 128 had them too, and that's when I actually started using @ because I first started to use the internet with the Commodore 128D accessing a shell account at the University through a 1200 Bps modem.

  • @jeffspaulding9834

    @jeffspaulding9834

    11 ай бұрын

    The Commodores used their own encoding system called PETSCII. It had the @ symbol because PETSCII borrowed heavily from the first version of ASCII, which had no lower-case characters but did have an @ symbol.

  • @emmgeevideo
    @emmgeevideo11 ай бұрын

    First-time viewer -- That was a really clever and well-done piece. I learned a lot.

  • @SuperMustache555
    @SuperMustache55511 ай бұрын

    @ always felt so techy to me, shocked that it has such an ancient history

  • @63801170
    @638011709 ай бұрын

    I was taught it was the "each" symbol, as the "a" is inside an outer "e". It was used the same as "at", but would say - 10 units "each" $23 = I'm happy to be re-informed and corrected from your video!

  • @JayOyster

    @JayOyster

    4 ай бұрын

    I don't think you're wrong. In English, the @ was used on store signage to mean 'each at'. It's an 'a' inside a stylized 'e'. This to differentiate from a group price. Say you had a stack of four tires on display, with a sign saying $6. This could be understand that the tires were four for $6. But if the sign says @$6, then four tires was $24. Whether there was an obscure latinate usage meaning 100 pounds, it was functionally used to mean 'each at' in American commercial environments, the primary place where computers were first created. I've had this argument with people for years, that even pronouncing it as the 'at' symbol is not correct. but you know . . . .lost that argument. :-)

  • @tparadox88
    @tparadox8811 ай бұрын

    I previously wondered about the origin of the symbol and was satisfied to discover that before computers it was used in commercial notation, which explained to me why it arrived on computer keyboards. I didn't know about the unit of measure, but I do know that in Spanish (at least Salvadoran Spanish), the symbol is still called "arroba". I'm not sure I fully agree with the conclusion that it would still be on standard keyboards without email just because it was included in ASCII. As computers became more general use, it could have easily been replaced with something more relevant to general users, like if somebody developing keyboard layouts decided that the common user was more interested in taking about temperatures than about commodity trades and it caught on, we could have had a world where ° replaced @ before someone invented the user@server scheme. What was on keyboards dictated what went into ASCII, ASCII doesn't dictate what's on keyboards.

  • @davidwuhrer6704

    @davidwuhrer6704

    9 ай бұрын

    ° is also part of ASCII, and most keyboard layouts include it. In old typewriters it was used for composite characters like å.

  • @Toksyuryel

    @Toksyuryel

    8 ай бұрын

    @@davidwuhrer6704 Most keyboard layouts outside the US anyway. Here in the US it's pretty much unheard of to see ° on a keyboard.

  • @phil4986
    @phil498611 ай бұрын

    I am amazed you kept me interested for 7:07 minutes in a video about the @ sign. Well done. Excellent information too.

  • @brandursimonsen4427
    @brandursimonsen442711 ай бұрын

    I have always known that @ represents the Latin word ad meaning at. I was surprised to learn that this is not known. It is a combination of a and d. It would be nice with a similar letter for pr., per or pro, meaning for.

  • @Woodman-Spare-that-tree

    @Woodman-Spare-that-tree

    6 ай бұрын

    The abbreviation “pp” stands for “per pro”. It is commonly used when signing a letter on behalf of someone else, usually one’s manager.

  • @Rheinhard
    @Rheinhard11 ай бұрын

    I believe that the later version of BCDIC which included the “@“ symbol was in fact called Extended BCDIC, or EBCDIC (commonly pronounced “ebb-see-dick” by the grey eminences who had been working with the old IBM 360 mainframes for decades when I worked at Johnson Space Center for NASA).

  • @Ghi102
    @Ghi102 Жыл бұрын

    I wonder about # or maybe even *, which also seems odd to me as a character. Actually, what about the many different brackets (, { and [?

  • @InkboxSoftware

    @InkboxSoftware

    Жыл бұрын

    Here's a great source that was a big help to the research that covers a few of those: shadycharacters.co.uk/contents/

  • @marcusaureliusf

    @marcusaureliusf

    11 ай бұрын

    The asterisk * by itself is not that odd, but using it as multiplication sure is very odd...

  • @joserodrigues_br

    @joserodrigues_br

    11 ай бұрын

    @@marcusaureliusf sometimes I find the * too graphic a representation... 🤣 I'm a 40 yo still in the 5th grade though...

  • @krashd

    @krashd

    11 ай бұрын

    The hash and asterisk symbols were on all tone-dialled phones for some reason. They still exist today on smartphones with both symbols appearing on either side of the zero.

  • @martinhaub6828
    @martinhaub682811 ай бұрын

    I remember using the @ in the Univac 1108 Exec operating system 50 years ago. Seeing it pop up in email made complete sense.

  • @andypuempel2570
    @andypuempel257011 ай бұрын

    Great work on this. I enjoy seeing the history of things like this. Thanks for sharing.

  • @philiptownsend4026
    @philiptownsend402611 ай бұрын

    Very very interesting. When I started work in 1971 the Hollerith cards we used by our ADP department in the compilation of the UK's international trade statics and if I remember correctly the computer was a LEO (Lyons Electronic Office) 3. There was a large room called the Hollerith room and the ladies that populated it were calle "The Hollerith Girls". Incidentally, I had Xerox Star demonstrated to me and was a user of only the second Apple Mac 2 in the UK connected to one of the first laser printers in the UK, a modified photocopier. My colleague used one of the first Amstrad PCs. It was our job to look for and at emerging technologies and bring them to the attention of the UK Civil Service and military services to stimulate ideas on how IT could be applied in Government service. They were exciting times.

  • @lawrencedoliveiro9104

    @lawrencedoliveiro9104

    11 ай бұрын

    LEO ... that’s going _way_ back. Imagine a computer system created by a chain of tea shops! Because their chief statistician saw it as a great way to improve their business, and nobody else had a suitable solution, so they came up with their own.

  • @krashd

    @krashd

    11 ай бұрын

    @@lawrencedoliveiro9104 That's like the Dutch Aesthedes computer, a graphic designer didn't like the CAD software available or the lacking abilities of computers so he built the first CAD-dedicated computer.

  • @Duck-wc9de
    @Duck-wc9de11 ай бұрын

    In portugal (and latin languages) we still call it "arroba". As you mentioned it was an unite of measurement that was based on the weigth of a certain amount of carob tree seeds. Carob is "alfarroba" This tree grows in southern Itally, Spain and Portugal, northern Marroco and Algeria and Turkey.

  • @Phobero

    @Phobero

    11 ай бұрын

    We don't call it that in Italy though

  • @michaelcallummayaka
    @michaelcallummayaka5 ай бұрын

    You just gained a subscriber. This was fascinating. I never knew IBM started with tabulating machines.

  • @wixostrix
    @wixostrix11 ай бұрын

    This is truly one of the most informative videos I’ve ever seen on YT.

  • @quite1enough
    @quite1enough11 ай бұрын

    Interestingly enough the symbol @ in Russia is called - sobaka, literary means "the dog"

  • @TheBcoolGuy
    @TheBcoolGuy11 ай бұрын

    I didn't realise it was so old! The Swedish word for it directly translates to "trunk-A" (like what an elephant has).

  • @ivanxyz1
    @ivanxyz111 ай бұрын

    Thank you for this video. Your content is very well organized and presented.

  • @phpsoftwareengineering
    @phpsoftwareengineering3 ай бұрын

    Fascinating! Thanks for the history lesson. I learned something new today.😊

  • @azaria_phd
    @azaria_phd11 ай бұрын

    1:30 fun fact: in Spanish, @ is still called "arroba".

  • @catreader9733
    @catreader973311 ай бұрын

    At 6:49, there is a spoken and visual error: "@ was in ASCII and BCDIC" and both those acronymical words are displayed. However, as the presenter said earlier, @ was not included in BCDIC; it was added during the creation of Extended BCDIC (acronym for which was and still is EBCDIC and spoken within the trade as "EbbSeDick").

  • @samgould8567

    @samgould8567

    11 ай бұрын

    This should be a pinned comment.

  • @Sebidkk
    @Sebidkk11 ай бұрын

    I work for a Keyboard Brand and thats even a new information for me. Thank you very much :)

  • @TheTruthKiwi
    @TheTruthKiwi11 ай бұрын

    First off, very well done video. Second, I knew the @ was there because it is a character in the English, and other, languages. I can see how someone might think it is just for email though. Thanks for the history lesson and well made video. Subbed :)

  • @garreswe
    @garreswe11 ай бұрын

    What a great video! I've wondered a long time about this key and you explained it well. I use Nordic key layout and it's pretty annoying to type @ because I have to press the right Alt + 2 so I have to use both hands. It would be much nicer if @ was on the right side of the keyboard.

  • @PitiNasri

    @PitiNasri

    11 ай бұрын

    On icelandic layout it's Alt Gr + Q

  • @Shifter-1040ST

    @Shifter-1040ST

    11 ай бұрын

    @@PitiNasri Same on German layout

  • @okaro6595

    @okaro6595

    11 ай бұрын

    How is this different from US layout where one needs to use also two hands as it is shifted? Of course if you twist you can press ctrl-Alt-2 with one hand but why make it more complicated when you have two hands.

  • @VioletCatastrophe

    @VioletCatastrophe

    11 ай бұрын

    @@okaro6595 On UK layout it's pretty much right next to the right shift, and can easily be done with one hand. US layout is still weird to me, but I still have my UK keyboards from when I moved so I haven't needed to adjust.

  • @lawrencedoliveiro9104

    @lawrencedoliveiro9104

    11 ай бұрын

    Here in 🇳🇿 we mainly use the US keyboard. But on Linux I can define a Compose key, which gives me access to hundreds of extra characters via mnemonic multi-key sequences. E.g. compose-lessthan-doublequote and compose-greaterthan-double quote for “ and ” characters, compose-l-slash for £, compose-slash-equals for ≠ and so on.

  • @mattgio1172
    @mattgio1172 Жыл бұрын

    Fantastic as always!!

  • @Autotrope
    @Autotrope11 ай бұрын

    Never occurred to me before that people would think @ comes from email addresses. Like, if that's the case why would email addresses have basically invented a symbol??

  • @krashd

    @krashd

    11 ай бұрын

    All symbols have to be invented at some point...

  • @Maddog-xc2zv
    @Maddog-xc2zv2 ай бұрын

    We note research here was done and properly done, something rare these days on social media platforms. Great video

  • @GraveUypo
    @GraveUypo11 ай бұрын

    that is an "arroba", which is basically a unit of weight worth 15kg. we use it a lot here in brazil, as that's the main unit of weight used to weight livestock

  • @sohopedeco
    @sohopedeco11 ай бұрын

    The arroba is still widely used in Brazil in the cattle market. It equates to exactly 15kg.

  • @gwcrispi
    @gwcrispi5 ай бұрын

    I love how you explain Hollerith cards like they're ancient history. I learned to program using those things...

  • @lampmolloy
    @lampmolloy11 ай бұрын

    this is very thorough and well paced, really nice job

  • @righteousfaust620
    @righteousfaust620 Жыл бұрын

    My favorite use of it is in the word Lati@s

  • @JohtoGen9

    @JohtoGen9

    Жыл бұрын

    :o

  • @colebot
    @colebot Жыл бұрын

    After watching this video, it is now seems very weird that we read the @ symbol as 'at' when there isn't the shape of a 't' anywhere in it

  • @MarcosRobertoDosSantosJF

    @MarcosRobertoDosSantosJF

    11 ай бұрын

    In Portuguese we always read @ as arroba (there was this word already in the language). Before internet, it was used a lot as a measure to weight livestock meat

  • @grijsje2000
    @grijsje200011 ай бұрын

    The commercial use of @ to mean 'per unit' did not take hold in continental Europe. In the Netherlands we used the French word à for that, probably because French was the most used language in international communication during the 19th century .

  • @jpotter2086
    @jpotter208611 ай бұрын

    You know you're getting old when you see a topic and reflexively think, "ahhhh, kids..." Nice video, very thorough.

  • @pcachu
    @pcachu11 ай бұрын

    Kind of surprised you were still referring to IBM's character set as BCDIC when the Extended version (which finally included the @) was commonly known as EBCDIC ("eb-sid-dic"). I'm old enough that there was still an EBCDIC-based mainframe when I was in college.

  • @thomaschristopher8593

    @thomaschristopher8593

    11 ай бұрын

    yeah, I was expecting the name with a prepended E.

  • @kalburgy2114

    @kalburgy2114

    11 ай бұрын

    I programmed on IBM mainframes in Assembler language until 2002. Used EBCDIC.

  • @gregsiska8599

    @gregsiska8599

    11 ай бұрын

    -Took an IBM assembly language course in the 1980's. It used EBCDIC.

  • @lawrencedoliveiro9104

    @lawrencedoliveiro9104

    11 ай бұрын

    He was careful to distinguish the two.

  • @qwertyuiopzxcfgh
    @qwertyuiopzxcfgh11 ай бұрын

    In Dutch it's called _apenstaartje,_ meaning "little monkey tail".

  • @weskerish

    @weskerish

    11 ай бұрын

    We call it Affenschwanz in german "monkey tail" :D

  • @qwertyuiopzxcfgh

    @qwertyuiopzxcfgh

    11 ай бұрын

    @@weskerish I didn't know that Schwanz also means tail, so I was a bit surprised when I read that word 😅

  • @acgsamson6934
    @acgsamson693411 ай бұрын

    Fun fact in Denmark @ is called "Trunk A" as in elephant trunk. Nice video:)

  • @kitefan1
    @kitefan111 ай бұрын

    🤣Becoming lead, hilarious! Are you going to explain "Hashtag" to the people who don't remember wired telephones? Also, I looked it up once, the pattern on the standard IBM computer input cards had a different pattern from the original Hollerith cards and while early computers used teletype you left out the whole mid range where the input was mostly on card decks and the output was on printed pin-fed paper.

  • @bleachno9
    @bleachno9 Жыл бұрын

    In Spanish, @ is still called Arroba

  • @rodrigobelinchon2982

    @rodrigobelinchon2982

    Жыл бұрын

    nunca pensé que fuera la misma arroba del peso , impresionante

  • @lumipakkanen3510
    @lumipakkanen351011 ай бұрын

    Very nicely put together! Now can you tell me why there's a "¤" symbol on my Finnish keyboard? I've used every other symbol printed on my keyboard for a known purpose but never that one.

  • @88porpoise

    @88porpoise

    11 ай бұрын

    It was adopted as a generic currency sign. In theory you would have either been able to use that and just mean the local currency or typing it would type your local currency sign. It never really caught on, but it has some niche uses.

  • @mellertid

    @mellertid

    11 ай бұрын

    Seems it also appears on French, Danish, Norwegian, Swedish, Estonian and Hungarian keyboards.

  • @chery_nya

    @chery_nya

    11 ай бұрын

    @@mellertid soviet comuter keyboards and displays also did use this symbol

  • @PlanParadigms
    @PlanParadigms5 ай бұрын

    Was in the room at BB&N, Alston MA,, a computer room with TWO PDP-10's and each having a card reader as primary IN/OUT. Ray gave me a demo. A fellow Newton resident may he RIP.

  • @AvgDan
    @AvgDan3 ай бұрын

    In school I was taught it stood for "at or around", but I've never run across that description before on the internet through brief searches.

  • @tysoniousmink4683
    @tysoniousmink468311 ай бұрын

    Suggestion for future videos: You should get a pop guard for your microphone. The bass pops are very strong on this one and it's not easy to listen to with a subwoofer.

  • @nikdog419
    @nikdog419 Жыл бұрын

    You mean the around sign? 😋 Huh, You never hit the date use meaning. @1700 used to mean 'Around 1700'. Was common in History lectures before the 2000s.

  • @ColeMayes
    @ColeMayes11 ай бұрын

    Very interesting, and informative. 😊 When I started learning how to program computers we had to do it with punch cards. That was so long ago I had forgotten virtually everything related to the beginning. Thank you for this video. 🙏 😊

  • @James_Knott

    @James_Knott

    11 ай бұрын

    My first programming course was FORTRAN in grade 12. We used pencil mark cards!

  • @mojoneko8303
    @mojoneko830311 ай бұрын

    I learned something new today. 🙂 Thanks for the video!

  • @Dr_Kenneth_Noisewater
    @Dr_Kenneth_Noisewater11 ай бұрын

    We now know that ENIAC was not the first general purpose computer. Colossus, the programmable digital computer developed by Tommy Flowers and collaborators to crack codes during WW2, is now regarded as the first GP computer. But it was kept secret by the UK government until the mid-70s - long enough for ENIAC to become one of those trivia answers that everyone knows. But the story of colossus is incredible in its own rite.

  • @calcubite9298

    @calcubite9298

    11 ай бұрын

    I am curious. Did Colossus have van Neumann architecture?

  • @Dr_Kenneth_Noisewater

    @Dr_Kenneth_Noisewater

    11 ай бұрын

    @@calcubite9298 You can google that. But i suspect you know the answer and think it’s some kind of gotcha. But your agument is not with me. Colossus was a programmable GP computer.

  • @calcubite9298

    @calcubite9298

    11 ай бұрын

    @@Dr_Kenneth_Noisewater I do apologize. I promise that I was not intending that as a gotcha. I only recently started college so I am learning about ENIAC and EDSAC and other early computers. I barely know what von Neumann architecture even is. I learned the phrase 'Turing complete' mere weeks ago. I'm going to go to the library and pick up a book on computing history as I find it interesting.

  • @Dr_Kenneth_Noisewater

    @Dr_Kenneth_Noisewater

    11 ай бұрын

    @@calcubite9298 I apologize back, then. I assumed things unfairly. The internet has a way of making me cynical. Yeah the story of Colossus and Tommy Flowers, a postal worker, is absolutely fascinating if you are a computerphile. The story of cracking Enigma is pretty well known, but the story of Colossus and how they used it to crack the much harder “Tunny Code” (aka the Lorenz cipher) used by the German high command is not. It’s told on KZread by Prof. Brailsford at, I think, Nottingham Univ on the Computerphile channel. Highly recommend! And there is a very thick and intimidating book called “Colossus” which I bought but haven’t yet waded into. The fact that they kept such a ‘colossal’ achievement a complete secret until the 70s is incredible.

  • @James_Knott

    @James_Knott

    11 ай бұрын

    It's a stretch to call either fully programmable. They were both designed for specific tasks. In fact, GP computers didn't really appear for years. For example, in the early days of computers, there were some models that were designed for science & engineering and other for business use. They had completely different architectures. For example, the IBM business machines actually worked in decimal & fixed point, but the S&E ones worked in binary & floating point. This continued with the languages, with COBOL for business and FORTRAN for S&E.

  • @gaz9411
    @gaz941111 ай бұрын

    When I was growing up in the late 80s/early 90s my parents taught me @ was used for "around" as in if you were estimating a figure within a ballpark. Made perfect sense to me at the time, it's an a with something round it. Then it became the "at sign" as the internet and email took off. I honestly thought this would come up in the video, but now I know it's been the "at sign" for a heck of a lot longer than they've been alive 😂and now I think about it, it was never something I was taught in school or heard anywhere else... Just curious if anyone else has ever heard it used in the context I had or is it just some mad thing my parents decided? I'm in the UK and my parents came from opposite ends of the country and both seemed to know about it, although one of them may have taught it to the other before I came along... Who knows!

  • @michaelj8582

    @michaelj8582

    11 ай бұрын

    “around” was acheived by an equals sign with squiggily lines instead of straight.

  • @vinylarchaeologist

    @vinylarchaeologist

    11 ай бұрын

    Gaz, I used to live in Romania as a kid, and there it was sometimes called “arond”. I always thought that was because of “a” and “rond”, or circle. Which makes sense. But now that you mentioned your story, maybe Romanian just bastardised the English “around”… Mysteries!

  • @lawrencedoliveiro9104

    @lawrencedoliveiro9104

    11 ай бұрын

    In Unicode, I can find “≈” (U+2248

  • @lawrencedoliveiro9104

    @lawrencedoliveiro9104

    11 ай бұрын

    ALMOST EQUAL TO),

  • @lawrencedoliveiro9104

    @lawrencedoliveiro9104

    11 ай бұрын

    “≃”

  • @misha4422
    @misha442211 ай бұрын

    Very interesting. Quite the winding route. Well done video. Thank you.

  • @jasonrubik
    @jasonrubik7 ай бұрын

    Excellent video, and the format, editing, graphics, and voiceover were top-notch ! It was so good that my attempt to find any flaw at all was when I realized that you did not mention the textile industry, and how looms for weaving cloth used punch cards. I think Hollerith got the idea from looms (especially those by Jacquard) and not from train conductors. en.wikipedia.org/wiki/Jacquard_machine#Importance_in_computing

  • @Anolaana
    @Anolaana11 ай бұрын

    I saw this on another youtube account, went looking for this video and found it really hard to find with search! The @ symbol doesn't seem to be a valid search term, and for some reason "at key" didn't turn up the "at sign". I had to put your channel name in to find it again! That aside, great video for historical context and the NES content is cool too :)

  • @GarryDumblowski
    @GarryDumblowski11 ай бұрын

    It's kind of interesting how many keys on the keyboard never really get used by most people, and only have fairly niche uses in programming languages. I genuinely think most people couldn't name a single use for the pipe or grave.

  • @KairuHakubi

    @KairuHakubi

    11 ай бұрын

    they're for emoticons!! ^.^ :| By pipe you mean | right? a lot of progrums that want to let you have spaces in things... say, usernames or tags... but still make them searchable... will use the pipe for that.

  • @GarryDumblowski

    @GarryDumblowski

    11 ай бұрын

    @@KairuHakubi Yeah, pipe is the |. That's interesting though, I usually see underscores used for "spaces that aren't really spaces"

  • @KairuHakubi

    @KairuHakubi

    11 ай бұрын

    @@GarryDumblowski oh yeah that too. but sometimes those are allowed to remain underscores, so they need a different one.

  • @lawrencedoliveiro9104

    @lawrencedoliveiro9104

    11 ай бұрын

    I use “|” every day. It’s used to create command pipelines in Linux, and as part of union/disjunction operators in several different programming languages. “`” has a few different uses, like quoting reserved words being used as table/field/variable names in SQL, or indicating TTY output in Markdown. And how many people type “\” when they really mean “/”? I like to call that “DOSlexia”...

  • @GarryDumblowski

    @GarryDumblowski

    11 ай бұрын

    @@lawrencedoliveiro9104 See, that's the thing. They have uses, but most people aren't programmers. Command pipelines in Linux is probably the most ubiquitous use, but it's still not something most people know.

  • @SleepyFox123
    @SleepyFox12311 ай бұрын

    TLDR: its just a stylized cool looking "a" that other people started to use and it spread across Europe and it was used commercially and for coding until someone wanted to make mail but digitally cuz digitally is cool and he didn't know what letter to use to distinguish the user from the host so he basically just closed his eyes and picked "@" because why not.

  • @LuaanTi

    @LuaanTi

    11 ай бұрын

    Actual TLDR; it used to literally be "at", which got turned into a single character similar to how etc. got "shortened" into &c. This was extremely common practice with the written word that continued into the age of European printing presses for obvious reasons (even when they weren't literally a single character, many such repeated clusters were cast as one block to make things faster). Seriously, have a look at old documents, it's all over the place, and only becomes less common when typewriters were introduced - since at that point, the complexity and size of the keyboard became important (though of course, there's always things like shorthand). The usage in mailing systems is just as obvious as the usage in accounting. Three apples at a pence each; send to Guy at University of Chicago. While the arroba used the same symbol, it's not particularly interesting for the usage of the @ in English. Funnily enough, &, which obviously meant "and" at times got confused with "at", because it stands in for the Latin "et" (meaning "and"). In other news, I'm not very good at TLDRs.

  • @Baer1990
    @Baer199011 ай бұрын

    I'm excited for this video! I always fill out forms with a typewriter and have to use a pen to make the @ as typewriters don't have it

  • @Baer1990

    @Baer1990

    11 ай бұрын

    well, I guess I was wrong. Got to check my typewriter again

  • @margaretford1011
    @margaretford10112 ай бұрын

    I always get a kick out of watching young people discover that something they think of as “modern” was used long ago. I’m old, so I remember the @ sign used everywhere for price tagging. But sixty years ago, I’m sure my dad got the same kick out of watching our surprised faces when he knew all the words to a song playing on our rock station radios. The song might have been new to us, but he knew it from another era. Recycling is fun.

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