How embedded systems work: the hidden computers in everyday things, and how engineers build them
Requirements and constraints: why engineers fight over one cent on a device
Engineers who design a new device can argue for a week over one part that costs a few cents more. On a laptop, nobody would care. On something sold by the thousand, those cents decide which chip goes inside.
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1
Rono's company is one small workshop, and he asks you to help him build the new flap. You know nothing about electronics. He says the first day needs only a pen.
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2
First you write what the flap must do, with Miva: open only for her cat, in time, send her a message, and lock at night when she asks. Then Rono starts a second list, and says it will decide more than the first.
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