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Questions tagged [demultiplex]

Demultiplex (DEMUX) is the reverse of the multiplex (MUX) process – combining multiple unrelated analog or digital signal streams into one signal over a single shared medium.

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Arduino emulating a keyboard that has a demultiplexer

I have a old typewriter which I want to automate with an Arduino. The way I am trying to do it is to replace its keyboard with the Arduino and make the Arduino emulate the keyboard i/o. The keyboard ...
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Does this sound like a good approach to decoding a dumb keypad?

The background: I bought a "dumb" 8-pin 4x4 keypad for use in a project. (This one: https://www.sparkfun.com/products/14881 It has a wire connected to each row, and a wire connected to each column. ...