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8BUILDING A MUSICAL INSTRUMENT

This chapter will show you how to create sound with electronic components! Unlike other projects you’ve built so far, this chapter’s projects use an integrated circuit (IC), which is a whole circuit that’s been shrunk down and packaged inside a tiny box. All sorts of circuits can be built as ICs, and most household devices are full of them. Peek inside a computer or an electronic toy, and you’re sure to find a few.

To start, I’ll explain what an IC is in more detail and describe how to figure out what a particular IC does. Then, you’ll get some practice with ICs by building a simple circuit that makes some strange ...

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