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10CIRCUITS THAT MAKE CHOICES

Chapter 9 was all about ones and zeros, and you played with bits and bytes in a couple of projects. Now in this chapter, you’ll make circuits that actually use ones and zeros to make decisions. Logic gates are components that check for the voltages that represent those ones and zeros and output a voltage accordingly. I’ll show you a few types of logic gates and how you can use them to create a secret code detector.

IT’S ONLY LOGICAL

Logic is a way of reaching a conclusion based on pieces of information that you know to be true or false. For example, imagine you know the following statement is true, beyond a doubt: ...

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