Ken Shirriff's blog

Computer history, restoring vintage computers, IC reverse engineering, and whatever

Obama on sorting 1M integers: Bubble sort the wrong way to go

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Recently StackOverflow and Hacker News discussed the question of how to sort 1 million 8-digit numbers in 1 megabyte of RAM. This reminde...
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How to create a new schematic symbol in the Eagle editor

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This tutorial describes how to create a custom schematic symbol in the CadSoft Eagle editor . It assumes that you have some familiarity with...
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Spectral analysis with the Tektronix 5000 oscilloscope

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Many oscilloscopes have advanced spectral analysis features that perform Fourier Transforms on measured signals to generate a frequency spec...

A dozen USB chargers in the lab: Apple is very good, but not quite the best

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When you buy a USB charger, how do you know if you're getting a safe, high-quality charger for your money? You can't tell from the...
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