Ken Shirriff's blog
Computer history, restoring vintage computers, IC reverse engineering, and whatever
Examining a technology sample kit: IBM components from 1948 to 1986
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I recently received a vintage display box used by IBM to illustrate the progress of computer technology. This display case, created by IBM...
16 comments:
Reverse-engineering a low-power LED flasher chip
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How do you make an LED blink? A vintage way is the LM3909, a chip from 1975 that can flash an LED for a year from a single flashlight batt...
12 comments:
Reverse-engineering an early calculator chip with four-phase logic
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In 1969, high-density MOS integrated circuits were still new and logic circuits were constructed in a variety of ways. One technique was ...
4 comments:
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