Ken Shirriff's blog
Computer history, restoring vintage computers, IC reverse engineering, and whatever
Reverse-engineering the standard-cell logic inside a vintage IBM chip
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Integrated circuits are often built from standard-cell logic, constructed from standardized building blocks such as NAND gates. Since I...
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Germanium transistors: logic circuits in the IBM 1401 computer
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How did computers implement logic gates in the 1950s? Computers were moving into the transistor age, but transistors were expensive so cir...
6 comments:
Strange chip: Teardown of a vintage IBM token ring controller
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IBM used some unusual techniques in its integrated circuits, and one of the most visible is packaging them in square metal cans. I've ...
8 comments:
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