Ken Shirriff's blog
Computer history, restoring vintage computers, IC reverse engineering, and whatever
Simulating the IBM 360/50 mainframe from its microcode
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The IBM System/360 was a groundbreaking family of mainframe computers announced on April 7, 1964. System/360 was an extremely risky "...
23 comments:
Silicon die teardown: a look inside an early 555 timer chip
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If you've played around with electronic circuits, you probably know the 555 timer integrated circuit, 1 said to be the world's be...
7 comments:
Christmas shopping the IBM way: computerized gift selection in 1962
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In 1962, the Simpson's department store in Toronto used an IBM computer to help customers select Christmas gifts, based on the charact...
3 comments:
Reverse-engineering a tiny 1980s chip that plays Christmas tunes
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For the holidays, I decapped a chip that plays three Christmas melodies. The UM66T melody chip from the 1980s was designed for application...
10 comments:
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