register storage

Discussion in 'The Projects Forum' started by haroonasaeed, Jun 3, 2010.

  1. haroonasaeed

    Thread Starter New Member

    May 25, 2010
    9
    0
    hi ....i have been asked to make a register storage project i.e the serial register .....
    ie i have a 3*4..and i want to take two entries from the keypad and i want to store that entry in my register and than i will take another entry from the keypad and then i will store that entry in another serial register...
    the four bit outputs from outputs from the two register will be added and compared...
    problem 1:-
    now the problem from which im suffering from is that i dont how to take input from 3*4 keypad since it has 7 output pins since the encoder will require 10 inputs to encode....
    problem 2:-
    if i have pressed some button from keypad let say it 7 ...that will go to encoder and than to register....now if i want to press second button from the keypad let say it 4 .how will it reach to the encoder and the second shift register to store this no....
    kindly help me on this ...anxiously waiting for reply
     
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