From the given $3$ state counter made from $T$ flipflops and $D$ flipflops, the next input sequence are as follows:
- $T_0=\overline Q_2$
- $D_1=Q_0$
- $T_2=Q_1$
| Initial State |
Current input |
Next State |
| $Q_0$ |
$Q_1$ |
$Q_2$ |
$T_0$ |
$D_1$ |
$T_1$ |
$Q_0^+$ |
$Q_1^+$ |
$Q_2^+$ |
| 0 |
1 |
1 |
0 |
0 |
1 |
0 |
0 |
0 |
| 0 |
0 |
0 |
1 |
0 |
0 |
1 |
0 |
0 |
| 1 |
0 |
0 |
1 |
1 |
0 |
0 |
1 |
0 |
| 0 |
1 |
0 |
1 |
0 |
1 |
1 |
0 |
1 |
| 1 |
0 |
1 |
0 |
1 |
0 |
1 |
1 |
1 |
| 1 |
1 |
1 |
0 |
1 |
1 |
1 |
1 |
0 |
| 1 |
1 |
0 |
1 |
1 |
1 |
0 |
1 |
1 |
we can see from above table given counter count sequence like $011\rightarrow 000\rightarrow 100\rightarrow 010\rightarrow 101\rightarrow 111\rightarrow 110$. The state $001$ is missing.
Option (C) is correct.
