Question Home

Position:Home>History> What were these pieces made out of when they were first invented?


Question: What were these pieces made out of when they were first invented!?
and what are they made out of now!?
if you could also put what there capacities were then and now that would be helpful!.

CPU
Memory unit
RAM
Motherboard
graphics card
sound card
Hard drive!.Www@QuestionHome@Com


Best Answer - Chosen by Asker:
CPU's were made out of Vacuum Tubes!.!.!.then Transistors!.!.!.then silicon!.!.!.which basically was a way to miniaturize these !.!.!.Silicoin chips are stil lused now!.!.!.

Memory and RAM (Random Access Memory) First used tiny magnetic "donuts" arranged in an array (X,Y) with three wires running through them (X,Y) and and a detector (Current was run through a memory location sat 10 and 10 which would then magnatize the donut!.!.!.(making it a one)!.!.!.Run the current the other way and it would de-magnatize the donut (making it a zero) Hence binary numbering system!.!.!.

Graphics Card!.!.!.was hard wired in the computer!.!.!.and would allow you to place dots on the screen!.!.!.Hi Resolution or HIRES (Apple II) was roughly 600 X 400 and 16 colors!.!.!.

Sound Card produced a single tone!.!.!.where the frequency could be changed!.!.!.One note at a time (Sort of like a cheap Casio)

Hard Drive !?!?!? Punch Cards!.!.!.Large Magnetic Tapes (Every see those old 1960's james Bond movies with the Big reel to reels in the evil lair !?!?!?) For home computer!.!.we used cassette tape players!.!.!.which evolved into the floppy disc!.!.!.then the hard drive!.!.!.!.Www@QuestionHome@Com