Computer Nostalgia - Hardware 40 Years Ago

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I still have my first programmable digital computer from 1965.
Doh. Think you've got me on the oldest date for a computer. I definitely didn't have any computers at that time.

May your bits be stable and your interfaces be fast. :cool: Ron
 
I still have my post Commodore 64 Toshiba laptop. What a machine it was, 2x 3.5 inch floppies! If I recall correctly it came with DOS 2.11. I still have a few odd and end parts from my first job. One part of interest (maybe) is a diode from a Burroughs B3500 mainframe power supply, and a Nixie tube display from the same machine. I really liked the B3500s, I learned how to machine language program it which probably sparked some interest in writing programs. There are still a few Palm Pilots around, including a Tx with wifi. The Pilots have been retired for quite a while now.
 
I still have my post Commodore 64 Toshiba laptop. What a machine it was, 2x 3.5 inch floppies! If I recall correctly it came with DOS 2.11. I still have a few odd and end parts from my first job. One part of interest (maybe) is a diode from a Burroughs B3500 mainframe power supply, and a Nixie tube display from the same machine. I really liked the B3500s, I learned how to machine language program it which probably sparked some interest in writing programs. There are still a few Palm Pilots around, including a Tx with wifi. The Pilots have been retired for quite a while now.
I think the B3500 is the first computer I got paid to program as a summer job (I was 17 and fresh out of high school). I programmed it in Fortran and ended up finding an intermittent hardware error. It turns out that after doing enough calculating it would get too hot and start making math errors. That was a difficult defect to find.
 
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Decided to go through the DVD's in my rack and watch them. Watching WAR GAMES tonight. They have some cool old computer equipment. They even have CARD CATALOGS and MICROFILM READERS in the library. How did we ever survive the 60's, 70's, and 80's?

May your bits be stable and your interfaces be fast. :cool: Ron
 
I really liked the B3500. It was a physically large machine, I even had to reduce the size of the picture to upload it (really). I worked on them in a bank and they were programmed in COBOL which I knew nothing about, I was onsite for hardware repair. They had core memory, 60KD (kilo digits) per stack. One memory module of head per track disk was 10MB, took a 1 horsepower motor to spin the 4 platters, and weighed 750 pounds. We've come a long way since then! The disk module was on wheels and rolled into a 'garage' as it was called which held up to 5 disk modules. An 'EU' was at the head of each string, basically a control module which also contained an air compressor, air tanks with 5 micron filters, and hoses that ran to each disk module to 'fly' the heads. Part of the disk PM was draining any water from the filter bowls, checking the air pressure on the modules (3 pressure zones each), and checking the linked leather belts that spun it for tension.

Fun times (really). By the time I got there they were no longer teaching the B3500 so I went to B4700 training. The B4700 could have core or solid state memory, and although I don't have any the power supply diodes from it they were larger than the B3500. A small machine language program was manually punched into memory via the console keyboard which started loading the MCP (Master Control Program (OS)) I never liked the teletypes used as an output console, they were really hard to maintain so we kept a few spares. The processor keyboards were great, you could read and write hex directly into memory. The good old days.
 

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I owned a TI-99/4A. I played a bunch of games on it, loading them from audio tape. Bought a few game cartridges as well. I was writing a "Jckpot Yatzee" game for it when I came across a Packard Bell.
 
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