KEYPAD ARDUINO

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12.00 د.إ

The keypad is widely used in many devices such as door lock, ATM, calculator…

Pinout

Keypad pins are divided into two groups: row and column.

Keypad 3×4 has 7 pins: 4 row-pins (R1, R2, R3, R4) and 3 column-pin (C1, C2, C3).

Keypad 4×4 has 8 pins: 4 row-pins (R1, R2, R3, R4) and 4 column-pin (C1, C2, C3, C4).

 

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