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When my Engineering Education began I was in Junior High School in Marion, Indiana. The transistor was celebrating it's 10 yr. anniversary and they were way too expensive for experimenters like me. Vacuum Tubes were still king and B+ was a lot more important than Vdd. As the years have trekked by I have added to that knowledge base with DC-Relay logic, Fluidics, TTL Ckts., IC's, Main Frames, Micros, and for 30+ years PC's.

Computers I have used:

IBM 3560, DEC Mini-Main Frame, Burroughs 910,  AS-400, HP-3000, Micro-controllers from Intel, Motorola, NEC, Toshiba, Zilog, AMD, COPS, Siemens and so many others that I don't even remember their names.

Computers I have owned:

#1 My first one was a deck of 3X5 cards with holes punched for Binary and slits for sorting, adding etc. using a long wire probe.

#2 Was a DC relay driven state machine with a Drum Type Memory. Controlled a robot. It was about 50% built from scratch and 50% taken from a junked machine controller. All the logic was done with 24v. DC and a small motor that would stop at at any of 48 notches on the drum. The motor ran from 12v DC and was in series with taillight bulb from a car. I ran it with four 6v car batteries. At a preselected positions various micro switches would engage and control the robot functions. I used a hard wired cable to connect a "control" box to the "logic". The display was a clock hand at the end of the drum pointing to a number on a face plate. Each relay had a small 24v pilot lamp that indicated its state.

#3 Was a giant sorter and printer that prepared envelopes with addresses. It also was a state machine with paper tape for memory. Had TTL and vacuum tube Flip-Flops.  Display was 256 #47 pilot lamps! It was from the dumpster at the Sun Chemical Building in Ft. Lee, NJ. I had to leave it when I moved to California (but kept the paper tape reader /writer). I never figured out how to change its hard wired program. It must now occupy 10 cubic feet of landfill.

#4 Was a 4-bit NEC CNC machine controller. Had IC's, TTL Logic, Diode Matrix Programming, A 2k state machine ROM. and 16 bytes of TTL ram each byte was on an individual card. I kept the paper tape reader from #3 above and used it to both program and supply data. The tapes could be spliced together to use the program part over and just add new data. I tried valiantly to get the output to go to a video monitor but was never able to get all the IC's I needed to build the electronics.

#5 Was an EXON word processor (Z-80 processor). Unique in every way.

#6 A home built XT clone (8080 processor). Two Floppies  64k, & way too expensive.

#7 Used AT-clone. (286 processor) First Hard Drive (10MEG). Color Monitor  (CGA) !!

#8-#??? a whole array of 386, 486, Pentium and god only knows what else was under the cover now, PCs. Mostly used -- Some very well used!  All were used to design and test Keyboard Interfaces while self employed.

#30 +/- HP Pavilion XT914  800mhz, 128 mb. ram,  30 gig hard drive, and a CD-writer that died after a couple of years. This Computer died a terrible death. It's primary data bus became intermittent and the Hard Drive sounded like a freight train. It had to be scrapped, but served me well for 5 years. It was turned on for 8-16 hours a day during that time.

#31++  9-23-04  HP Pavilion Model a700n  3gig AMD Athlon processor, 512 Meg. Mem., 80 Gig Hard Drive, CD-RW.  So why another HP -- I have to say I have had very good luck with them. There are things I don't like about HP but the advantages outweighs the problems. I have worked on many brands and they are one of the best for the price. This computer cost almost exactly the same as my first IBM XT-Clone! 

So, what kind of Personal information were you expecting?