Input push button Circuit

Discussion in 'Embedded Systems and Microcontrollers' started by plchidamparam, Jun 24, 2010.

  1. plchidamparam

    Thread Starter New Member

    Mar 18, 2009
    1
    0
    Hi this is chidamparam, i am new to micro-controller i knew the program for getting input and processing it but now i need to built a keyboard from 1-9 as show:
    1 2 3
    4 5 6
    7 8 9
    i need the circuit. i.e. any resistor or any thing else to be connected to the circuit or simply we can connect to micro-controller?
     
  2. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,750
    759
    Hey welcome to AAC.

    Did you try googling for a circuit.
    Try to find key matrix circuits.
    It is pretty simple.
     
  3. retched

    AAC Fanatic!

    Dec 5, 2009
    5,201
    312
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