Ken Shirriff's blog
Computer history, restoring vintage computers, IC reverse engineering, and whatever
Superbeta transistors inside: Die photos and analysis of the LM108 op amp
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The LM108 op amp is an interesting chip to examine under a microscope because it uses special superbeta transistors for high performance....
8 comments:
Inside a RFID race timing chip: die photos of the Monza R6
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I recently watched a cross-country running race that used a digital timing system, so I investigated how the RFID timing chip works. Ea...
12 comments:
Simulating a Xerox Alto with the ContrAlto simulator: games and Smalltalk
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The revolutionary Xerox Alto computer came out in 1973 and set the direction for personal computing. If you want to try out the Alto'...
10 comments:
Restoring YC's Xerox Alto day 10: New boards, running programs, mouse problems
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Last week our vintage Alto was crashing; we traced the problem to an incompatibility between two of the processor boards. Today we repla...
18 comments:
Restoring YC's Xerox Alto day 9: tracing a crash through software and hardware
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Last week, after months of restoration, we finally got the vintage Xerox Alto computer to boot ( details ) and run programs. However, so...
3 comments:
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