In this Design Idea, an old technique of diode-based 16-to-4 encoding is combined with a new design, to scan a record number of buttons – 74 – with only four I/O pins! First start with the ancient ...
Back in 2011, Google made a tough call, making one of the biggest changes to Android over the years. Until then, devices running the mobile operating system had come with a distinctive set of hardware ...
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