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    Matrix keyboard key code

    Abstract: AN4810 AN481 keyboard matrix scan code
    Text: AN481002 A Keyboard Scanner Author: Tseng Han Hsing Holtek Semiconductor Inc. Introduction This unit uses a 4x4 keyboard matrix, giving a total of 16 keys with each key representing a single hexadecimal value as shown in the diagram. The microcontroller program scans the keyboard matrix to detect which key


    Original     		AN481002 Matrix keyboard key code AN4810 AN481 keyboard matrix scan code PDF