State diagram:

 

Figure 11. State diagram of sequential circuit in Figure 10.

To see how the states move from one to another click on the image.

circle.gif (1149 bytes)

Timing diagram:

 

Figure 12. Timing diagram of sequential circuit in Figure 10.

Click on the image to see its timing behaviour.

signal.gif (1039 bytes)

Note that the counter will reach the state Q1Q0 = 11 only in t