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Practical AVR Microcontrollers: Games, Gadgets, and Home Automation with the Microcontroller Used in Arduino by Alan Trevennor

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APPENDIX A

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Common Components

This brief primer appendix offers a look at the basic components that you will need to know something about if you plan to do many electronic or MCU projects. Here we look at a selection of simple components that crop up time and again and form the basic building blocks of all electronic circuitry.

Resistors

A resistor, as its name implies, is a component that, to varying degrees, resists the flow of electrical current.

When I was new to electronics, it always seemed a little odd to me that resistors were needed. After all, I reasoned, the purpose of most electronic devices is to originate or amplify electrical signals, ...

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