Question: Design the interface circuit that conncet 8 push putton (keypad) with the MP by using non-programmble IC's with the address 89H.

Design the interface circuit that conncet 8 push putton (keypad) with the

Design the interface circuit that conncet 8 push putton (keypad) with the MP by using non-programmble IC's with the address 89H.

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The hex keypad has 8 communication lines namely R1 R2 R3 R4 C1 C2 C3 and C4 R1 to R4 represents the four rows and C1 to C4 represents the four columns ... View full answer

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