Ken Shirriff's blog
Computer history, restoring vintage computers, IC reverse engineering, and whatever
Improvements to the Xerox Alto Mandelbrot drop runtime from 1 hour to 9 minutes
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Last week I wrote a Mandelbrot set program for the Xerox Alto, which took an hour to generate the fractal. The point of this project was to...
15 comments:
One-hour Mandelbrot: Creating a fractal on the vintage Xerox Alto
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I wrote a short program to generate the Mandelbrot set on the Xerox Alto, a groundbreaking minicomputer from the 1970s. The program, in...
11 comments:
Reverse engineering the 76477 "Space Invaders" sound effect chip from die photos
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Remember the old video game Space Invaders? Some of its sound effects were provided by a chip called the 76477 Complex Sound Generation ch...
11 comments:
1950's tax preparation: plugboard programming with an IBM 403 Accounting Machine
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Long before computers existed, businesses used electromechanical accounting machines for data processing. These one-ton accounting machines ...
17 comments:
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