1
ECE 422
Dr. N. El Naga
SHEET #3
1.
A special Flip-Flop is to be designed. This Flip-Flop has two inputs X and Y. The input X
selects the mode of operation, such that when X=0 the Flip-flop acts as a D-FF with Y as
the D-input and when X=1 the Flip-flop

1
ECE 422
Dr. N. El Naga
Homework #2
1.
Using 3/8 binary decoder and the necessary gate, implement the following function:
f(A,B,C,D) = P0 + P2 + P3 + P6
2.
Using 8/3 binary encoder and necessary gates, design and implement the 8/3 priority
encoder shown

1
ECE 422
Dr. N. El Naga
Homework #1
1.
A set of operators is said to be functionally complete (Universal) iff every switching
function can be expressed entirely by means of operators from this set. List 6 of these
universal sets, and prove that the set c