2x3 Keypad With Buzzer Sound

Nana Supriatna


2x3 keypad with the sound
of the buzzer is an electronic circuit that will be active if
the use of a 9V battery as the source voltage and the circuit
uses a microcontroller as the brain of the workings of this
electronic tool. This series consists of 7 pieces Led and 6
buttons. Led where one serves as an indicator. The working
of this tool is if one of the keys 1 through 6 is pressed then
the LED will glow and the Buzzer will sound.

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