Hi all,
I'm asked to design a 4x4 matrix keypad decoder. As I understand it has 8 inputs, R1-R4 from keypad matrix and C1-C4 from a 4 bit ring counter. But if I want to get the output expression, I have to work for 8 variable inputs, aren't I? It really gives me a headache till now. Are there any simpler methods that I can use to obtain the expression? Or any other method to create the matrix decoder?
Thanks for all your help,
Fredy Yanardi
I'm asked to design a 4x4 matrix keypad decoder. As I understand it has 8 inputs, R1-R4 from keypad matrix and C1-C4 from a 4 bit ring counter. But if I want to get the output expression, I have to work for 8 variable inputs, aren't I? It really gives me a headache till now. Are there any simpler methods that I can use to obtain the expression? Or any other method to create the matrix decoder?
Thanks for all your help,
Fredy Yanardi