1) Connect battery to supply 5V to the circuit.

2) Keep the RESET and PRESET as active high signals.

The buttons in active high state are and the buttons in active low state are

3)Apply the data at Data Input.

The switch in ON state is and the switch in OFF state is

4) Apply one clock pulse at clock 1 and observe this data at LED Q3.

The LED in OFF state is and the LED in ON state is .

5) Click on "Add" Button to add data to the Truth Table.

6)Apply the next data at Data Input.

7)Apply one clock pulse at clock 2, observe that the data on Q3 will shift to Q2 and the new data applied will appear at Q3.

8)Repeat steps 3 to 5 till all the 4 bits data appear at the output of shift register.

9) Click "Print" to get the print out of the Truth Table.

Design and verification of 4-Bit Serial In Parallel Out Shift Register

Battery

Q3

Q2

Q1

Q0

IC 7474

IC 7474

Data Input

Parallel Output

Reset

Preset
+
-












      TRUTH TABLE            

Serial No. Clock Data Input Q3 Q2 Q1 Q0