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Fairchild PPS-25: 4-bit CPU for 25-digit precision
It’s been a long while since I have been able to post/write, having a new baby apparently does that (I missed that in the datasheet). Since I have neglected posting, or forgotten, lets continues with ‘The Forgotten Ones” This brings us to 1971, Fairchild, after losing many employees in 1968-69 who went on to start world famous semiconductor companies (Intel and AMD amongst others) has decided to make their own processor system.
This brings us to 1971, Fairchild, after losing many employees in 1968-69 who went on to start world famous semiconductor companies (Intel and AMD amongst others) has decided to make their own processor system. a Walsh Spectrum Analyser design chose it above the what would normally be considered much more powerful Intel 8080 largely due to its math capabilities. Around 500 of these were made and were found in such planes as the Piper PA-31T Cheyenne, Cessna 441 Conquest II, and Beech King Air, high end twin turbo props of the era.
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