When I bought my first IBM clone (decades ago) from a shop in downtown Toronto, the salesman escorted me to the alley behind the shop to discreetly hand me the IBM EPROM literally in a brown paper bag because he couldn't legally sell it to me… I guess that would have been in 1985…

@EgoShredder

7 жыл бұрын

Haha! Love it!

@WickedMuis

7 жыл бұрын

Kinda like an illegal drugs deal? :p

@MPnoir

7 жыл бұрын

*Psst hey.. hey you. Yes you! Wanna buy some bios?*

@WickedMuis

7 жыл бұрын

RonJohn63 All the parts in an IBM computer, EXCEPT for the BIOS chip the most important part of a computer, were outsourced materials and could be freely copied/used. But the ONE by IBM copyrighted thing, the BIOS chip, could not. Even in the U.S. and A.

@RonJohn63

7 жыл бұрын

Wicked Mouse Yeah, and that's why companies like Compaq developed their own clean-room reimplementations of the IBM BIOS. So there should have been no reason in 1985 to have to sell IBM ROM chips out the back door. (EDIT: unless Henry Postulart really bought his clone in 1982 instead of 1985.)

The guy mentions the Mac, and the camera focusses on the Apple II. Oh well same manufacturer at least. In the early 1980s, most 8 bit micros were usually called Home Computers (well at least they were in the UK). I can't remember anyone calling them Personal Computers except maybe the manufacturer. Home computers had TV modulators (the more expensive home computers also had RGB component or at least direct composite output). Only the IBM and its clones were referred to as PC's. The Home Computers usually had better graphics and sound than the the early PCs, because they were promoted as entertainment devices as well as office tools. The reality was most were much more suited to being games machines. The PC was initially focussed on business use, being sold to accountants with the help of the spreadsheet killer app. The Macintosh was focussed on desktop publishing... and it only had a monochrome monitor. Then of course there was the price tag.

Halt and catch fire

I've got an IBM PC XT, but I'm all over this kit. I need it in my life!

Thumbs up for mentioning HACF

@An.Individual

7 жыл бұрын

Never heard of it previously, is it any good?

@ASilentS

7 жыл бұрын

Season 1 at least is a must watch in my book.

@Designandrew

7 жыл бұрын

Daniel Jochem then you're gunna love Mr.Robot

@ASilentS

7 жыл бұрын

Designandrew I agree but with the caveat that you have to be willing to experience non-linear story telling, extensive hallucinations, and (in the most recent season) vomit.

@Designandrew

7 жыл бұрын

SilentS Mr.Robot S2 renewed my faith in TV shows

The term "Boot" comes from loading just enough of a program into RAM on startup to let the computer know how to read and write memory. It's short for "bootstrap" as in *_"pulling yourself up by your bootstraps"._* This is a physically impossible task that reminded programmers of their problem. How do you load a program that teaches a computer to read and write memory if it can't read memory?

@laharl2k

7 жыл бұрын

first manually you power up the ram (asuming you have no rom) then also manually you set the address bus to the reset vector address and guess what, manually, program it with your boot code. you wang to write the simpliest code possible to make it load the rest from somewhere else which is easier to code. the best would be to have a rom chip so you dont have to program the ram each time you power the machine up

@bayabongo

7 жыл бұрын

CPU knows how to read memory but it has to be instructed to do it. Bootstrap is that initial set of instructions.

@RMoribayashi

7 жыл бұрын

bayabongo I was more interested in how words lose connection with their origin and how their meanings change. In another 50 years will technology terms that seem obvious today still be common but have meanings only known to etymologists? Will selfie replace portrait and all connection to being self made be lost. History gives us plenty of examples. From naval parlance we have "by and large" (a fair wind) and "slush fund" (extra money from selling used cooking grease). From guns we get "flash in the pan" and "going off half cocked" (flint-lock rifle misfires). The age of steam trains gave us "running out of steam", "make the grade", "whistle stop tour", "backtrack" and "living on the wrong side of the tracks".

@Inaflap

7 жыл бұрын

+bayabongo - Indeed, the BIOS itself is memory, and the CPU knows how to read that.

@laharl2k

7 жыл бұрын

Inaflap actuallly it doesnt. It may know how to access its cache, in a way similar to an sram, but it has no idea about sdram, ddr etc. That's why you have a memory controller which handles the refresh, timings, etc. Before the memory controller came with the cpu, it was on a separate chip on the motherboard and the cpu requested the data from the ram to it via the front side bus. Later it was integrated into the north bridge and then into the cpu, but the cpu can only access sram like memory which you set an address and get a piece of data. In the case of executing data from a sram it would be the cpu havings its positiong register externally conected to the address lines, and then the command lines conected to the data out lines, all working at no more than the ram chips' speed, just like in a 368 and 486

That text on the analog monitor looks beautiful.

@moatl6945

7 жыл бұрын

For me this monitor brings me back memories. Actually this type of computers were the first ones I “worked” in elementary-school with in the mid 1980ies. Later, when I had typing-lessons in secondary-school I managed to get on the one computer with the amber-colored monitor - the other were green-colored - because it was less exhausting. These computers were “upgraded« with a hard-drive. But the funniest thing about this computers was, that you actually you could switch these types to negative-display.

@RetroSwim

7 жыл бұрын

The "TTL signal" is the digital part!! ;)

@Immolate62

7 жыл бұрын

People often referred to hard drives as "Winchesters" well into the 80's.

This guy is my spirit animal. His office looks kind of like my flat. Old junk everywhere, people wondering what the hell you are doing with it. But it's just so nice to be able to understand a system to its fullest extend, give it one byte of information and poking the pins with your scope to see this wonderful piece of equipment is doing exaclty what you intended it to do. I love being a computer science student (or in a much more graceful term an 'Informatiker').

can't wait to see further developments in this series

Great video! I'd like to see more IBM videos, it's a great topic!

Ahhh, the smile that manifests itself on my face every time my brain realises its watching a > 30 FPS video. :) In other words, thank you @Computerphile, for doubling your backup sizes and rendering times, for the same content, just for the sake of our community!

i wonder how is john titor doing....

@Computerphile

7 жыл бұрын

+Laharl Krichevskoy just being born? :)

@SuviTuuliAllan

7 жыл бұрын

Steins;Gate

@Killerwalrus234

7 жыл бұрын

John Titor in Steins;Gate was based on a real person.

@juggernaut93

7 жыл бұрын

*On a fake real person

@SuviTuuliAllan

7 жыл бұрын

Gioele Ciaparrone Ah! Fake on this timeline!

This brings back memories. I remember back in those days, about all of that stuff they had to do to clone an IBM BIOS, using "dirty" and "clean" coders, in order to avoid copyright infringement. I even remember overclocking an old 8088 XT clone computer, even back in those days!

I think the huge success of the IBM PC was the fact that there were many compatible machines, which were much cheaper than an original IBM PC was. The reverse-engineering (or re-implementation) of the BIOS made that possible, and that's how this platform came to be known as an "open" one, which could rather easily be standardized. And that's what happened, and even nowadays, PCs are based on this standard from over 30 years ago (but of course with many extensions and different technologies built around and on top of that).

+computerphile guys you make very informative videos.love ur videos.keep it up guys 😊😊.

Pretty sure the Bios listing came with the PC in the Technical Reference Manuals - no need to go "byte by byte" Also the reason the "PC" stuck with the IBM Personal Computer and the compatible clones is that when software was sold in boxes, the one for the IBM/clones would say "For IBM PC and compatible computers" - software for other computers was not labeled in this way

I'd argue the PC vs Mac divide is probably more down to branding and marketing than technical reasons. It's much easier to get away with an advertising campaign suggesting that the competition is slow and crash-prone if you don't actually name them as "Windows".

@DerVerruckteFuchs

7 жыл бұрын

There was a period of time that Macs used Motorola's PowerPC architecture when IBM/Windows PCs used 486 and eventually x86 architectures. Mac and IBM formatted floppies weren't compatible was another big difference.The hardware was a big differentiating factor. "IBM and (PC) compatibles" or "Macintosh" was a staple to put on software boxes when software still came in boxes. Macs were never IBM or (IBM) PC compatible so that's an early reason why "PC" never really stuck as a term for Macs. The hardware divide closed quite a bit when Apple moved to x86 Intel chips. Most of the hardware in a modern Mac is the same as a PC. Things like the BIOS/UEFI, possibly the motherboard, and maybe some cutting edge PCIe based SSD interfaces are the most differing factors. The interesting wrinkle is that you can dual boot a modern Mac with Windows, Linux, or some version of BSD basically making it almost no different to a Windows/Linux/Unix/BSD/ PC aside from quirky OS installation methods. Older PowerPC Macs could technically be PCs as well since they can also run Linux or some version of BSD. Even some of the old Motorola 68k can run NetBSD, thus technically can become a NetBSD PC. I'd agree that marketing reinforced the PC/Mac dichotomy in current mainstream computing. Marketing probably had a lot to do with it in the early days too. Though from a software side you still need a means of differentiating between OSes however you go about it. I'd also agree that Macs are either PCs, or at least very close coming from a strict hardware standpoint and not a form factor/usage standpoint. However, while saying Windows PC(s) sounds normal to me, Mac PC(s) creates a mental speedbump for me when I think about it. Looking back at other computers, Amigas, Atari STs, etc. didn't get any PC branding either. If those computers managed to establish modern mainstream acceptance they would still be needing to be differentiated from each other along with any other PC platforms. "PC" would just refer to all of them generically with their name differentiating them, e.g. "Amiga PC", "Mac PC", "IBM/Windows PC". I think the reasons IBM/Windows currently has claimed "PC" to be colloquially as "theirs" is because other PC platforms disappeared and weren't able to fight to keep the term "PC" applicable to their platform, nor did Apple seem to care enough to bother fighting to establish "PC" as an applicable term for their computers. So instead of "IBM/Windows PC" and "Mac PC", we now have "PC" and "Mac".

@WickedMuis

7 жыл бұрын

What a delightful wall of text! Thanks! :D

@wotsac

7 жыл бұрын

DerVerruckteFuchs time was when Macintosh used Motorola's 68000 architecture and wrote floppy disks with a method that was totally incompatible with IBM style floppy disk drives.

@KuraIthys

7 жыл бұрын

I remember the odd usage of 'PC' in the 80's referring to macs. Though the abbreviation 'PC' seems to have been rare amongst anything other than IBM clones, the full term 'personal computer' was seen quite often in advertising and articles. I still remember references to the commodore 64 personal computer, Atari personal computers (400 and 800, though more commonly later referred to as the atari 8 bit computers), The amiga personal computer, and even statements such as -the macintosh range of personal computers'. Then again, equally often you would see the term 'home computer' used for such systems instead.

@KuraIthys

7 жыл бұрын

wotsac I can remember windows utilies designed to read mac disks, so I assume it's a software issue.

I had a Soviet clone of it. They are pretty rare these days, since they contained ~45 grams of gold and ~15 grams of palladium and platinum.

When he's addressing the PC vs Mac thing at the end, he gives an example of a vacuum cleaner being referred to a a 'hoover', despite the fact this is a brand name. This is called a proprietary eponym and they pop up all the time. For example - thermos, biro, escalator, sellotape. I'd never stopped to think that PC was a proprietary eponym too. Interesting stuff!

Please do more on this topic! A longer video maybe. :) I can see an Amiga CRT display there but can't really read the logo on the computer below it. What computer is it? :) Also respect for having Atari ST!

this guy is old school... respect.

The PCXT was my first PC, I still have the hard cover ring binder owners manual on my shelf. Alley Cat was my favourite game of all time back then.

The 8080 is great. It is so simple that you can learn nearly everything about how a CPU works. I actually built a logical equivalent of the 8085A in Logisim on my own :)

Was a good computer. It was my 2nd computer, the first was a Tandy TRS-80 clone, but the PC was an infinitely better machine, and stood me in good stead until the 90's.

I just happen to have almost the exact set of chips in my drawer... (I don't have the DRAM and a lot of the standard logic though, but two AS7C4096-15J 512kB SRAM chips and an EPM7128STC100 CPLD would work too, and those chips does mean I can try fitting a full IBM PC into a smaller PCB, by implementing the bulk of the chipset using soft cores in the CPLD)

what website did you order the parts from?

@Computerphile

7 жыл бұрын

+David Dorin I'll find out and add a link to the description >Sean

@Computerphile

7 жыл бұрын

+David Dorin t.co/XNG06TbPBM

@David-vk5sv

7 жыл бұрын

Thanks! Cant wait to try and put on of these together. And thanks for a great video as always, you've reinvigorated my passion for computer science that my former vampire of a teacher sucked away.

"Halt & Catch Fire," or HCF, was the nickname of an undocumented opcode on a Motorola 6800 processor which would cause it to halt completely until it was reset.

With all the limitations of the IBM micro computer, their keyboard was incredible!

I want one of those kits.

I had one of those ( as my second computer).. A nice white/grey monster with a Gigantic hard disk, im sure was several MB big :D

6:45 The term "Personal Computer" did not exist before August 1981 (when the IBM 5150 was released). They (Apple II, VIC-20, TRS-80, etc) were all referred to as *microcomputers* (smaller than minicomputers like the PDP 11).

Follow up video with the kit assembled and working?

Did Computerphile ever made videos about the invention of the microprocessor? 4004, 8008 and 8080 are worth a video. And the legal battle later about a patent on a theoretical microprocessor. I think he actually won his case.

@arbazna

7 жыл бұрын

Don't forget the z80, more succesful counterpart of the 8008 during the 80's

@typograf62

7 жыл бұрын

arbazna Sure, the Z80 was great. But the 4004 and the 8008 were pioneering - and enjoyably simple. I still have a Z80 assembler program that never really ran. An RTTY-decoder. Probably the great failure was a primitive modem. I do not make errors in programs! ;-) As I could not get timing loops running well I resorted to timed interrupts. A real advance.

I still slap in the face everyone that yells at me for calling the Mac a PC. If Windows and Linux -based machines are PCs, Macs are PCs.

@Gnoccy

7 жыл бұрын

Exactly. For me the definition of the term PC is a general purpose computer meant for personal use. Basically Desktop's and Notebooks. Doesn't matter what software it runs or how build it.

@KuraIthys

7 жыл бұрын

That counts double now that macs run on intel x86 processors. At this point they are practically IBM clone derivatives with a non-standard bios and non-Standard OS. (bootcamp lets you run windows on one, which makes it even more obvious how similar they are).

@bborkzilla

7 жыл бұрын

The last non-PC Mac died when Apple dumped the Power-PC went to the cheaper and higher performing Intel architecture.

@Immolate62

7 жыл бұрын

You're splitting hairs. When you use the term "PC" to refer to a Mac, you are intentionally introducing noise into your communications. But you know that. It's a feature, not a bug.

@banderi002

7 жыл бұрын

Tom Holmes Not really, I just think it's a correct terminology that should always be used, so it's a no-brainer for me. I do use it knowingly that people will yell at me though, so yeah.

Solder for the solder god, chips for the chip throne!

@kathulu1

7 жыл бұрын

skulls!!

It's actually a 8088, not and 8080 (at 2:24)

@jeffirwin7862

7 жыл бұрын

It's actually 8088s & heartbreak.

@c0olcast

7 жыл бұрын

In any case, a banner in the video with a correction isn't too hard to add. And I just love this channel

So was this series of videos canned? I would have loved to see this thing assembled.

@Computerphile

6 жыл бұрын

I don't think Dr Bagley has started building it yet... >Sean

I would like to see a video about how IBM PC clones helped to make PCs cheap and common but also caused us stuck with obsolete technology in form of x86. :)

Or copy machines, which is just called Xerox machines... Veery interesting video, will there be a follow up, where we can se the machine get buildt? Keep up the good work:)

I so want to order a kit...

What is the TV series mentioned at 4:18?

What is the TV series he mentions @ 4:18?

I'm not really sure about OLD programs running on MODERN MICRO COMPUTERS?Something about clock speeds etc???

I have: PC, XT, 2x AT, and the rather rare XT286, and also a number of PS/2s It's excellent that a clone kit is available.

What is the difference between "Basic Input/Output System" and "Built In Operating System"?

I learned to program in BASIC and Pascal on an IBM PC in High School

Yes, I remember.

I have "fond" memories of running "park" before powering off...

Is that fan about to seize and consequently cause whole machine to overheat and get damaged??? A droplet of oil in fan bearing might save it, or new fan...

4:17 What series? Catching Fire?

I think the reason why the PC became so successful is a combination of two factors: - Until then, the personal computer industry were focused on the consumer market (Apple, Atari, Sinclair, etc.). But that market was limited at the time due to the lack of a consumer killer app. But once IBM (who was the 800-lb gorilla back then) entered the personal computer market, corporate customers had to take notice and could not say the personal computer was a toy anymore. And the corporate market in the '80s proved to be much greater than the consumer market - In a very unusual move, the team behind the IBM PC decided to use mostly off-the-shelf components instead of building everything in-house and only patent the BIOS. This is because they had a short deadline and they realized that, by following the standard IBM procedure, "it would take [them] 6 months to ship an empty box". But as a result they opened the door to PC clones who could use the same suppliers (Intel, Microsoft, Seagate, etc). This led to a flurry of competition that turned out to tremendously help the PC standard

@ecdhe

7 жыл бұрын

I didn't say lack of consumer programs, I said consumer killer apps. The number of consumers really wanting to have a computer in 1981 was still small as they were used primary for video games and learning to program (and the video game crash of 1983 primarily impacted video game consoles). The consumer killer up eventually came (the Web browser) but too late. On the other hand, the spreadsheet and the work processor were the corporate killer app, driving a lot of sales for professional use. All of a sudden companies like Compaq became much larger than Commodore because they targeting the business market. Yes, the Apple ][ was used for professional use before 1981, but I consider the IBM PC as a cosmetic transformation of the personal computer, making it respectable in large companies.

@ecdhe

7 жыл бұрын

The fact that IBM produced a mostly open platform definitely helped greatly as a lot of PC clones popped up. I don't think the PC would have been as successful if IBM had designed it the way it did for the PS/2. But the success of the PC was also because IBM was the first company to focus on the professional market. Most microcomputer makers of the time focused more on the consumer market (Apple, Atari, Commodore, Texas Instruments, Sinclair, Amstrad, etc.). The MSX standard was not nearly as successful despite being supported by numerous (Japanese) manufacturers.

@Immolate62

7 жыл бұрын

No doubt. The PC was out of reach for most consumers. My first encounter with the IBM PC was in 1984 while I was in the USAF in Thule, Greenland. Before then, all we had was CPT dedicated word processors.

The irony is also that Apple later used IBM-developed PowerPC CPUs.

@0x1EGEN

7 жыл бұрын

Actually... PowerPC was made by both Apple, IBM, and Motorola. Also known as AIM. They all participated in the development of the PowerPC

@Scy

7 жыл бұрын

Actually, PowerPC was based on the IBM RISC, which had existed for about a decade before AIM.

@0x1EGEN

7 жыл бұрын

Scy Yes they used RISC as the foundation for it, but it was heavily modified by the other companies to suit for their specific needs. en.wikipedia.org/wiki/PowerPC

Good video. One thing though: the 8086 was ALWAYS considered a 16 bit processor, otherwise it would've been called an 8080 ;-)

@telocho

7 жыл бұрын

The processor in the video is a 8088 though, which is a hybrid (works as a normal 16 bits internal, but just 8 bits on the pins).

I was in a train station the other day in serbia & they still were using something like that with the black and green screen

@allanfloyd8103

7 жыл бұрын

They're still fine, if you want the cheapest possible screen, and it only has to show text...

@Immolate62

7 жыл бұрын

They made some pretty sophisticated GUI-like interfaces back in the day, using only ASCII and upper ASCII.

@allanfloyd8103

7 жыл бұрын

Tom Holmes Your comment made me think of NetHACK... ;)

I thought that the PC or Mac thing was a concept created by Apple, because they could make wild claims about what PCs could do, with the assumption that people would interpret that to mean a windows PC, whilst legally they would be entirely in the clear because they could say they were referring to another PC manufacturer.

The good old days.

I heard about a new movie out called "Silicon Cowboys" about Compaq, that gets into how they reverse engineered the IBM BIOS.

Did I hear "the Intel 8080"? A slip of the tongue. IBM was so standard that when advertisments in Danish papers wrote about a PC with 1 MB memory it was sometimes "corrected" to "IBM memory" (memory was of course written "hukommelse" in Danish).

@videotape2959

7 жыл бұрын

Cool. Have you ever seen an Olivetti computer in a Danish paper?

@typograf62

7 жыл бұрын

VideoTape Yes, a siamese cat and a small dog: "Venlig og kompatibel" (friendly and compatible).

I wonder if you could over clock this

i'm getting a stein's gate vibe from this video

KURISUSTINA!!

What is up with the camerawork and editing in this video? All those rapid black fades gave me a headache

I have a 5150 with 5151 monitor with keyboard. dual 360k floppy drives. I have RAM expansion to 512kB and a Hercules monochrome card inside.

Mac users are proud to distinguish them self from the crowd and call their personal computer by a different name :)

sad he not mentioned that IBM was the one who made Intel to give the blueprints out for the 80x line out to amd ti and others

Don't remember the XT having a hard drive. Wasn't the AT the first model with a hard drive?

@ecdhe

7 жыл бұрын

I believe the XT was the first one with a hard drive - hence its name (XT for "Extended"). The AT was the first model with a more powerful-16 bit CPU (Intel 80286)

@kevind814

7 жыл бұрын

I remember the XT was the first PC the company I worked for bought, and it was just as mentioned in the vid; 1 5-1/4" floppy and 1 10Meg HD

@ecdhe

7 жыл бұрын

If I recall, the XT had a 8086 CPU (16-bit), contrary to a 8088 for the first IBM PC (8-bit).

@JimLeonard

7 жыл бұрын

Nope. XT also used an 8088.

@wotsac

7 жыл бұрын

The XT came with a hard drive where the PC did not.

I thought POST was the first bit of code being executed when powering on a computer.

yay

Is the ATAT named after the 8080?

@ropersonline

2 жыл бұрын

Granted, eighty-eighty is homophonous to A.T.A.T., but it seems doubtful. But you might be interested to know that predecessors to the Intel 8088 include not just the 8080, but also the 8008, 4040 and 4004, with the 4004 being generally recognised as the first ever CPU. Being a 4-bit chip, it could count all the way to fifteen, but that was enough for implementing a binary coded decimal (BCD) calculator, one digit at a time. That calculator was the Busicom 141-PF -- itself not a computer, but arguably the reason Intel-powered computers exist.

oh cool, I didnt know youtube did 1080p50 too.

IBM should have teamed up with Van Halen back in 1981, considering they both used a 5150! ;-)

@stefanozurich

7 жыл бұрын

First thing I thought of when I heard 5150 aswell.

@Allocated_Brain

7 жыл бұрын

oh you ate one too.

@EgoShredder

7 жыл бұрын

Allocated Brain Come to think(pad) of it, Apple could have used Van Halen's promotional services back for the first Mac launch too! ;-)

@EgoShredder

7 жыл бұрын

Answer = 1984

is there a specific name for those "green screens" that can only show the colour green?

@Ratmrage1

7 жыл бұрын

"The Matrix"

@g_glop

7 жыл бұрын

Monochrome

@velvetcake5425

7 жыл бұрын

Robin Williams thx, but unfortunately I use windows :(

@paulabraham2550

7 жыл бұрын

Green Screens.

@shadfurman

7 жыл бұрын

I had a couple friends always called them phosphor green... As apposed to phosphor amber.

does it have usb3?

@Trident_Euclid

7 жыл бұрын

No, but it got Thunderbolt 3.1 in the higher end models 😉

@pwolfamv

7 жыл бұрын

and no headphone jack :P

@zyrgle

7 жыл бұрын

It doesn't even have USB 1.0... and it won't run Crysis.

@huldu

7 жыл бұрын

I'm sure someone could make twitter work!

@zyrgle

7 жыл бұрын

Twitter can run on a C64 Google "Breadbox64"

This should be good.

My thought on the "why are macs not refereed to as PCs" has been because mac is more like a work console, as opposed to the gaming consoles that Sony and Nintendo build.

@krombopulos_michael

7 жыл бұрын

I'm pretty sure it was just Apple marketing. They do the same thing now. They never call an iPhone a smartphone. So they wanted everyone to think that a Mac wasn't just another PC when they came out the same way.

@JoriDiculous

7 жыл бұрын

They where. As was all computers directed at uh personal use :P After Windows became, the PC meaning lost its original meaning and just meant a computer running windows. And of course Apple wanted to stand-out from the MS (windows) "mainstream"..

@JoriDiculous

7 жыл бұрын

Also the thing that PCs was (and is) a myriad of different manufactures and Mac was (and still is) but one. So it is quite natural to refer to Macs as Macs :P

@Immolate62

7 жыл бұрын

Agreed Kurt. It was populism. Marketing reinforced it, and populism reinforced marketing. No conspiracy to defraud Apple.

Why did IBM use Intel and DOS? Why didn't they try to enter the market with their own CPUs and operating system?

I never knew the PC could read tapes!

I thought you couldn't turn them off without parking the drive.

But can it run Crysis?

Yes, MAC is PC, regardless of the marketing.

Just watch Halt and Catch Fire Season 1 to see how they really did it. Dr said this too :D

(~4:50) BIOS runs first? Last time I looked into it, today's computers actually start from the video memory, THEN load the BIOS.

i'm getting fallout vibes from this video, is that normal?

@Trident_Euclid

7 жыл бұрын

I think Vacuum tubes was been used in fallout universe. transistors are nonexistens afaik.

@yves-170

7 жыл бұрын

That's correct. The Fallout universe was identical to ours up until around the 50's or so, the "splitting point" is that no one ever invented the transistor in Fallout.

@lelandclayton5462

7 жыл бұрын

IDK, The pipboy had to of been transistorized due to the somewhat compact design. Let alone the CRT of the pipboy couldn't of been electrostatic deflection. Not to mention powering the device, must be some sort of nuke battery lol.

@Inaflap

7 жыл бұрын

We don't call them Vacuum tubes anymore... We call them Dyson cylinders.

@IanWilkinson

7 жыл бұрын

+Leland Clayton "had to of been", "couldn't of been" ? See me after class.

What i hate about these video is the focus on history of devices rather than giving technical details that someone can use as an alternative to a course.

@bigbenhebdomadarius6252

7 жыл бұрын

The PC standard was open-source. I'm sure you could find it online, if you look.

Microsoft stuck their dirty hands into UEFI because they missed their chance with the BIOS, although mucking up ACPI for years was very common among PC manufacturers who didn't care about supporting other OS

what if the BIOS was totally erased from the memory components?

@DavidChipman

7 жыл бұрын

You do know that the BIOS was in a ROM chip, right? So it could not be erased.

@krombopulos_michael

7 жыл бұрын

Like the other guy said, BIOS is basically etched into the motherboards memory. You can't delete it without ruining the board anyway.

@DavidChipman

7 жыл бұрын

You could ruin the chip while leaving the motherboard largely intact.

4:53 "So when you switch on a computer today, whether it's a Mac, a PC, any one of these old ones that are around me, they will all run their own bit of startup code, and this is referred to as the BIOS on a PC." But don't modern PCs run UEFI, not BIOS? I was under the impression that BIOS was a specific series of firmware that was succeeded by UEFI.

@d2factotum

7 жыл бұрын

UEFI still has to support a lot of the old BIOS interactions because otherwise it would break old programs, and it does pretty much the same job as the old BIOS, so referring to it as BIOS works just fine, I think.

@Maxander2001

7 жыл бұрын

UEFI BIOS

will this board run my gtx1080 and nvme ssd? xD

Umm, my PC doesn't have a BIOS. It's got UEFI instead.

Unboxing IBM pc

Or how people call trucks jeeps.

Backwords notation - I still have nightmares

PC or Politically Correct. It's PC to defend Windows. Using Linux is equivalent to wearing a tinfoil hat.

Haha kept thinking he was saying "AT-AT"....

Mac never had BIOS, technically. EFI :P

Pete Perkins :)

Halt And Catch Fire!

3:10 AMD even that far back huh

the reason why we call a PC a PC and a Mac and Mac is because of marketing. in the realm of marketing this is called product differentiation. a computer is a computer regardless of the brand it is people call it "my iPhone" instead of "my smartphone" because of the marketing that Apple and other companies have been trying to push. Remember the Apple commercial where the kid says "what's a computer?" it's because Apple wants you to think that an iPad is something different than a normal computer or tablet. Remember Its not a computer, its an ipad. it's just marketing to manipulate people into this delusional mentality. if it has a CPU, memory, input, and output, it's a computer.

Why's this guy such an Atari ST fanboy? Show the Amiga the respect and recognition it deserves!

@Inaflap

7 жыл бұрын

+urlituw - Are you trying to spark a war?

@ropersonline

2 жыл бұрын

Two words: Vertical refresh. One word: Eyestrain.

@uriituw

2 жыл бұрын

@@ropersonline How’s that relevant?