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The unit contains 2 PCBs. This one contains the microprocessor (an 80C49, the internal ROM is not used), EPROM (32K) RAM (8K), a CCITT 300 baud modem and a DAC used to send a digitised speech message
Back side, labeling
Full description and reverse-engineering analysis here: www.eevblog.com/forum/projects/avionics-teardown-looking-...
Discontinued. a.k.a. Family Thrift Center CPU. Pennington County. Photo by E Kalish, Oct. 2012.
Part of the Post Mark Collectors Club (PMCC) collection.
This is my CPU fan it keeps my Overclocked CPU cool. It was a must have when my Processor was at the verge of melting temperatures, a melted CPU is a bad one. Before I got this cooler I had to open my window just to let the frosted frigid air cool it, and I got tired of that. So I purchased this and now it runs cool. It is a 120mm fan that runs at the speed of 2000rpm and that keeps the CPU cool at around 90F at idle and 105F at max load which is pretty cool for my type of CPU. It’s A Cooler Master Hyper 212 Plus AMD/Intel with 4 heat pipes and you can apply 2 120mm fans to it. I can even make the fans be glowing if I wanted too, but personally I thought it was over kill since my case has no window. This fan was very difficult part to add to where I had to mod my motherboard a bit. It’s hard since you have to apply force but yet be very gentle since you ABSOLUTLY don’t want your motherboard to break, if that happens you can kiss it good bye. But other than that it’s totally worth it.