vintage computers, tubes, the MOnSter6502, cross-sectioned electronic parts, capacitors, and other detritus. coauthor of http://nostarch.com/open-circuits
@tubetime Oh wow, I went through multiple comprehensive manufacturer logo lists, even a russian one, and could not find it. This is some really obscure stuff! But yeah, I bet that it behaves like a OPA211 from TI
@tubetime I love these posts. When I lived in the Bay Area I had no space for collecting fun old stuff, sadly and/or thankfully. I only made it to a couple of the flea markets just to look around.
@tubetime so ... this would be the nefarious MM5204Q chip that can single chip-handedly solve ALL the world's problems. rumor had it that the chip had been secreted away due to overriding interests.
It’s a 16-pin EEPROM, newer MB series are/were marketed as FRAM being faster and having greater flash cycles than traditional EEPROM but given that package it’s probably first gen FRAM or last gen EEPROM.
@tubetime I remember some old Skee-Ball machines displaying "HEL" on the score counter and "P" on the balls remaining digit to indicate that they had run out of tickets and still owed some to the player
here's an odd little beast: the Mostek 3870. a single chip implementation of the Fairchild F8 architecture. this one has a piggyback socket for the program ROM chip.
simple and fun rework. this pin was grounded but needed to be tied to a signal. I removed the solder and added some glue to insulate it from the pad, then soldered the wire on.
@tubetime Philip Freidin modifies a pilot? pen that happens to fit almost exactly. IIRC he takes a little shave off them in a lathe. Not sure what exact pen he uses. I suspect that gives you a lot longer use time, but then the long pen won't work on a carousel.
@tubetime grandmother in a chip?
@tubetime Oh wow, I went through multiple comprehensive manufacturer logo lists, even a russian one, and could not find it. This is some really obscure stuff!
But yeah, I bet that it behaves like a OPA211 from TI
@tubetime it looks almost exactly like Telecom Eireann's logo, backwards.
https://www.flickr.com/photos/ajcarr/536570712/
(TE was the national telco of the Republic of Ireland)