How embedded systems work: the hidden computers in everyday things, and how engineers build them
RTOS: how one small chip does two jobs and still keeps its deadline
Add Wi-Fi to a simple device, and a job that took a moment can suddenly make everything else wait for seconds. Many small chips solve this with a tiny operating system that most people never hear of. How does one chip keep two jobs from getting in each other's way?
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You add Miva's message to the loop: after the cat goes through, send a message to her phone. Her cat goes out, and her phone shows it.
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Then the cat changes its mind and turns back, and its nose bumps the shut latch. The latch works fine, so why did it stay shut?
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