sherlock@vsnl.com wrote:
Talking of old pcs, I needed a few ttl ics and buffers to set right a communication system at a petrochem plant Sunday 3am. There were no devices available until i chanced upon an old pc. The mobo was dated 1988 and the cpu 1987. It was those horizontal boxes and weighed about 10 kgs. Inside was a 20MB harddrive, 5.25" fdd, 256 KB ram, cga graphics card, hdd/fdd card and a 286 16 MHz cpu. And several buffers and ttls.
My very first pc was a 8086/88 based one with a 'turbo' button that would increase frequency from 4 Mhz (normal) to 8 Mhz. It had no HDDs but had 2 FDDs of 360 Kb each. The RAM was 64 or 640? Kb. It had a horizontal bus board, with the cpu, I/O and other cards mounted vertically. The cpu was like a large ISA card. It was later sold off on weight. The monitor was a green phosphor one with an RCA video-in socket for cvs 50/60 Hz input. It could also play our tv signals but in green colour. The video signal of the computer was 60 Hz.
Regards,
Rony.