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Your claim was that all computers had FPUs nope. not what I said. you said none were available until the 1980's. I said 1950's btw, large computers didn't -- and don't -- have Floating Point Units (see jeffies? today you learned what FPU means). Floating point is designed in from the start. Takes more time to calc than interger, but it is there from the get go BTW, CDC was founded late in the 50s; I'm not sure they actually shipped a machine with floating point until the mid '60s. you are wrong. btw, you "home" computer was 11/23 in the early 80's? Sure, why not? It only cost a few thousand dollars, used. bull. a PDP-6, maybe, but not even a PDP-11. check your numbers dude. 11/23 was state of the art at that time. I sold interger machines at the time rather than scientific machines. I DO know that "home computers" (i.e. 8086 based) would go for upwards of six grand and those things didn't hardly compete with an 11/23. try again. I had the DEC at mine. no you didn't These were floppy based machines no they weren't. In 1972 Shugart still worked for IBM and the floppy was still IBM technology and was used to boot a System 32. our first in '82 from Apple computer, which was 68000 based, recently updated from a 6800 (btw yo-yo, Motorola called the microprocessor chip a "68000" because supposedly it had 68,000 transistors, which it didn't) Actually, around 1972 I had at home an IBM 2741 Selectric terminal a 2741 was part of an RJE station (which used punch cards) and was about the size of two chest-style home freezers. with a 134.5 baud modem that I could dial into Multics developement system at MIT, but that's another story. another bogus story. sure, and you traveled to junior high school on a hydrazine rocket. That's silly. I teleported. while you read "Amazing Stories" btw, how many wires on a "discrete" transitor used on a CDC machine? careful how you speak, for my brother worked the technical end of CDC for over 30 years. I don't remember ... would be a good guess for a transistor. I dealt with it at the "gate" level, "gate" level, eh? not the individual transistors. that is what a "gate" is, yo-yo, in this context IIRC, the logic was on small boards you are talking about TTL logic, dude. which is a whole different story than the one you are telling that each had 2 flip-flops, which probably had 2 transistors each. no it didn't The back of it was a *lot* of wire wrap. yo-yo, you were looking at the semi-conductor replacements for core memory of older, already installed machines. the "lot of wire" was there to slow the semiconductor memory response speed down to core memory speed so the machine didn't get ahead of itself. you know, don't you, that electricity travels one foot per nano-second? I'd guess around 30,000 "gates" in the machine, but I could be way off. not even frickin close. The logic book was several inches thick, with timing charts and logic diagrams. ("On the leading edge of this signal, the data from register x would be latched into buffer y ...") dude, you were looking at a repair manual. So jaxie, send this off to your brother and ask him if its a fair description, given that I spent a few weeks with the machine 35 years ago. If I sent it too him without telling him the source he would say, "Some Internet yo-yo, I see" |
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