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![4. Outputs, Inputs, and Timers - Making Embedded Systems [Book]](https://www.oreilly.com/api/v2/epubs/9781449308889/files/httpatomoreillycomsourceoreillyimages935494.png "4. Outputs, Inputs, and Timers - Making Embedded Systems [Book]")
4. Outputs, Inputs, and Timers - Making Embedded Systems [Book]
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