PART$-$B

We can obtain a frequency divider circuit by connecting a D flip flop $(74$LS$74)$ as shown below $($Use one of the D$-$FFs from the IC package$-74$LS$74.$

Design the two systems described below using this circuit.

$1-)$ Set up a circuit that performs both start and stop operations using the same button. Briefly explain the operation of the circuit.

$0$

$2-)$ Design a counter circuit that counts from $0$ to $15.$ Briefly explain the operation of the circuit.

Draw the circuit here after setting and testing it$.$