Hi.
i want to connect a 4*4 keypad to 74147 Ic can any one help me in connecting both of it !!!
4*4 keypad which i m using has 8 o/p
1 2 3 A
4 5 6 B
7 8 9 C
* 0 # D
||||||||
{outputs}

 

Here is a link to a discussion of different key or switch interface techniques.

Hopefully you can derive some understanding from reading it.

hgmjr