Ken Shirriff's blog
Xerox Alto restoration, IC reverse engineering, chargers, and whatever
Inside the digital clock from a Soyuz spacecraft
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We recently obtained a clock that flew on a Soyuz space mission. 1 The clock, manufactured in 1984, contains over 100 integrated circuits o...
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Understanding and repairing the power supply from a 1969 analog computer
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We recently started restoring a vintage 1 analog computer. Unlike a digital computer that represents numbers with discrete binary values, a...
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TROS: How IBM mainframes stored microcode in transformers
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I recently came across a Transformer Read-Only Storage (TROS) module that stored microcode in an IBM System/360 mainframe computer. This unu...
7 comments:
IBM, sonic delay lines, and the history of the 80×24 display
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What explains the popularity of terminals with 80×24 and 80×25 displays? A recent blog post " 80x25 " motivated me to investigate ...
12 comments:
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