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    keypad matrix

    Abstract: 4 by 3 membrane keypad 270 ohm resistor the program keypad scanning 4*4 matrix keypad
    Text: Application Note: Scanning The Keypad Matrix and Driving The LEDs 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 LED MATRIX RoHS COMPLIANT Row2 15 Row2 2 Row3 14 Row3 3 Row4 13 Row4 4 PINS 5 6 7 8 Column4 12 Column3 11 PINS 1 Column1 10 Column4 PINS 9 Column3 Row1 Column2


    Original     		3561ILL keypad matrix 4 by 3 membrane keypad 270 ohm resistor the program keypad scanning 4*4 matrix keypad PDF