Question

Design a timing circuit that provides an output signal that stays on for exactly twelve clock cycles. A start signal sends the output to the 1 state, and after twelve clock cycles the signal returns to the 0 state.

Answer 1

To design a timing circuit that provides an output signal that stays on for exactly twelve clock cycles, use a combination of a counter and a flip-flop.

Step-by-step explanation:

To design a timing circuit that provides an output signal that stays on for exactly twelve clock cycles, you can use a combination of a counter and a flip-flop. Here is a step-by-step explanation:

1. Start with a counter that counts the clock cycles. Set the counter to start at 0.
2. Connect the counter output to a one-input AND gate.
3. Connect the start signal to the other input of the AND gate.
4. Connect the output of the AND gate to the clock input of a D flip-flop.
5. Connect the output of the D flip-flop to the output of the circuit.
6. Connect the Q' output of the D flip-flop to the D input of the flip-flop.
7. Connect the clock signal to the clock input of the flip-flop.
8. Connect the Q output of the flip-flop to the reset input of the counter.
9. Set the number of bits in the counter to the number of clock cycles you want to count (12 in this case).