hi … keypad is connected

[Qaisar]

hi …

 

 keypad is connected with PO..

 PO needs PULL UP resistor .. 

use 10K pull up resistor and ur problem will be solved.

 here the code is for 4*3 keypad . but u can modify it easily …

 i already posted a diagram named CODE LOCK..

you can see that diagram , hope it will solve ur problem .,.

 

regards..