Reviving this 8088-based computer I built in 1991. The DS1225Y nonvolatile RAM still has an old program on it! Amazing for a device that is only guaranteed to last 10 years. No way to change the battery. Now, if I could only remember what that program is supposed to do...
#retrocomputing

It still works! My 32 year old wire wrapping is still functional. This is a 8088 based computer I built. It features serial output to a terminal. Unfortunately I don't have a terminal. I'm working on a USB to serial connection for it. O-scope indicates it still produces serial out.
#retrocomputing

Has anyone seen a switching power supply controller that looks like the IC below? Unfortunately the board manufacturer has obscured the part number so I can’t look it up. I haven’t been able to find any chips that look like this.

A few months ago I found this circuit board in the back of a drawer. It was given to me almost 40 years ago. It took some effort but I got it working again and made a walnut case for it. This is a MicroModule 85 by Bell and Howell
#retrocomputing