Re: What is the oldest working computer that you own?
First pic is the machine I started by business with in the back of an upholstery shop in 1993.
Originally Posted by K.Mandla
It has XYZ resolution of 1 micron, but can interpolate to a 1/2.
Next, the 8" Z-80 that processes it's output. It has a custom O/S and BIOS, with 64k of RAM. The discs hold the operating system and application software, and hold 1.1 meg.
Next is the Zeos 80486DX-33. This was a VERY advanced computer in it's day. Dual fans, 8 bays, 486 Daughterboard, 7 ISA slots. Bios date 1989. I bought the first month they came out, and fully loaded systems were $8,000+. I got the "stripper" instead. Just the 486 CPU sold for $1100 back then. 16mb of RAM was $1600. That single speed CDROM (no writing back then), was about $450. It has been run pretty much every single day since purchased. I probably have spent $5000 on it by the time I was finished.
It's running an app I wrote under W3.11, but had DOS with it when bought.
Next is it's "brother" with my guy Brian running it with 250x Video Microscope attachment active. Normally these have synthetic ruby-tipped touch probes made by Renishaw. It has an IBM desktop hooked up to it. It's a Pentium? I forget. Win3.11.
Last pic is a "backup" computer that was taken off line. It's a Microchannel PS2 286? Really freaking rare now. Microchannel was the most advanced bus design for the first 10 years of PCs, but never caught on. IBM wanted it proprietary so it died. A lesson that has implications today.
Patrick McSwain - New 32bit & 64bit Ubuntu 10.04 user as of 5/1/2010.
Networking new Linux computers into my existing Wintel-based small technical business.
I was a DOS programmer in a previous life. No UNIX/Linux experience at all.