ECE 275: Digital Design I
- Truth Table
- Excitation Table
-
a. It is a Mealy because Z depends on X (Z = X * Qa) b. Da = X'(Qb) Db = X
L | M | Q | Q+ |
---|---|---|---|
0 | 0 | 0 | 1 |
0 | 0 | 1 | 1 |
0 | 1 | 0 | 0 |
0 | 1 | 1 | 1 |
1 | 0 | 0 | 1 |
1 | 0 | 1 | 0 |
1 | 1 | 0 | 0 |
1 | 1 | 1 | 0 |
Q2 | Q1 | Q0 | Q2+ | Q1+ | Q0+ | L2 | L1 | L0 | M2 | M1 | M0 |
---|---|---|---|---|---|---|---|---|---|---|---|
0 | 0 | 0 | 1 | 1 | 0 | X | X | X | 0 | 0 | 1 |
0 | 0 | 1 | X | X | X | X | X | X | X | X | X |
0 | 1 | 0 | X | X | X | X | X | X | X | X | X |
0 | 1 | 1 | 1 | 0 | 1 | X | 1 | 0 | 0 | X | X |
1 | 0 | 0 | X | X | X | X | X | X | X | X | X |
1 | 0 | 1 | 0 | 0 | 0 | 1 | X | 1 | X | 1 | X |
1 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | X | X | X | 0 |
1 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | X | X | X |
Q | Q+ | S | R |
---|---|---|---|
0 | 0 | 0 | X |
0 | 1 | 1 | 0 |
1 | 0 | 0 | 1 |
1 | 1 | X | 0 |