Ken Shirriff's blog
Computer history, restoring vintage computers, IC reverse engineering, and whatever
Talking with the Moon: Inside Apollo's premodulation processor
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The Apollo missions to the Moon required complex hardware to communicate between Earth and the spacecraft, sending radio signals over hund...
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The digital ranging system that measured the distance to the Apollo spacecraft
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During the Apollo missions to the Moon, a critical task for NASA was determining the spacecraft's position. To accomplish this, they d...
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Reverse-engineering the LM185 voltage reference chip and its bandgap reference
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Many circuits, such as a computer power supply or a phone charger, require a stable voltage reference, but it's harder than you might e...
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