What is the maximum number of clock pulses needed to return

Question

1. A J-K flip-flop's "hold time", refers to:

a. The amount of delay a flip-flop makes in reacting to the clock.
b. The time an input must remain steady after the clocking edge occurs.
c. The time an output must remain steady after receiving a new setting.
d. The amount of delay a flip-flop makes in reacting to the J-K inputs.

2. What is the maximum number of clock pulses needed to return a 4-bit Johnson counter to its original state?
a. 4
b. 16
C. 12
d. 8

3. An 8-bit ring counter has 10101101₂ loaded into it. What is the value in the ring counter after 3 clock pulses?
a. 11011010₂
b. 11010110₂
c. 10110101₂
d. 01011011₂

4. Which of the following does a UART contain?
a. A serial-in/parallel-out shift register
b. A serial-in/serial-out shift register
c. A parallel-in/parallel-out shift register
d. A serial-in or a parallel-in/parallel-out shift register

5. Using which of the following does a nonretriggerable one-shot IC set its pulse length?
a. Applied clock pulses
b. Tri-state logic
c. Controlling the J-K inputs
d. An RC combination