Ken Shirriff's blog
Computer history, restoring vintage computers, IC reverse engineering, and whatever
Booting the IBM 1401: How a 1959 punch-card computer loads a program
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How do you boot a computer from punch cards when the computer has no operating system and no ROM? To make things worse, this computer req...
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Teardown of a quartz crystal oscillator and the tiny IC inside
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The quartz oscillator is an important electronic circuit, providing highly-accurate timing signals at a low cost. A quartz crystal has the...
11 comments:
A one-bit processor explained: reverse-engineering the vintage MC14500B
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The Motorola MC14500B 1 is a 1-bit processor introduced in 1976. While a 1-bit processor might seem almost useless, 2 it was marketed as...
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