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Junk Box Arduino: Ten Projects in Upcycled Electronics by James R. Strickland

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© James R. Strickland 2016

James R. Strickland, Junk Box Arduino, 10.1007/978-1-4842-1425-1_7

7. Logic Probe

James R. Strickland

(1)Highlands Ranch, Colorado, USA

One thing that is often hard to get your head around when you first start out with electronics is the mind-boggling speed at which things happen. The Cestino is, by modern standards, not especially fast with its 20MHz clock, or 50 nanoseconds per clock cycle. Nanoseconds are tiny. On the 50ns scale, humans move and think with the speed of plate-tectonics. It’s a time frame that is simply below our perception without tools.

The Need for Speed

Computers, and the logic from which they are made, are at home in nanosecond scale timeframes. Their great strength has always been the ability to execute ...

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