Keyboard matrix circuit: Difference between revisions

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==Description==

Without a matrix circuit, a 61-key keyboard would have to have 62 wires connected to the integrated circuit of the keyboard, which would be an awkward and thick bundle of wiring. With the matrix circuit, the entire 61-key keyboard can send signals to the integrated circuitcircuitsunni
koodi withpunda 16okidi wires -- they can be drawn schematically as a "key matrix" of 8 column wires and 8 row wires, with a mechanical switch at every intersection. The electronicthavidiya
pic or digital keyboard controller scans all of the columns, to determine if a key has been pressed. If a key in the column has been pressed, then the controller scan the rows, to determine which row has been activated. In a manner analogous to the children's board game "Battleship!", the keyboard controller determines which key has been pressed, and then plays that key's note. This entire process takes place so quickly that the performer is not aware of the delay.<ref name="dribin">

Dave Dribin.

[http://www.dribin.org/dave/keyboard/one_html/ "Keyboard Matrix Help"]. 2000.