Ken Shirriff's blog
Computer history, restoring vintage computers, IC reverse engineering, and whatever
Showing posts with label
electronics
.
Show all posts
Showing posts with label
electronics
.
Show all posts
Repairing a 1960s mainframe: Fixing the IBM 1401's core memory and power supply
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A few weeks ago, I wanted to use one of the vintage IBM 1401 mainframe computers at the Computer History Museum, but the computer wasn't...
20 comments:
Repairing a 1960s-era IBM keypunch: controlled by mechanical tabs and bars
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In this article I describe repairing an IBM 029 keypunch that wouldn't punch numbers. Keypunches were a vital component of punch card co...
13 comments:
Hands-on with the PocketBeagle: a $25 Linux computer with lots of I/O pins
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The PocketBeagle is a tiny but powerful inexpensive key-fob-sized open source Linux computer. It has 44 digital I/O pins, 8 analog input...
11 comments:
Inside the vintage Xerox Alto's display, a tiny lightbulb keeps it working
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In this Alto restoration episode, we repaired a second CRT display, exercising our TV repair skills and discovering a tiny mysterious lightb...
12 comments:
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