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

2) Press Switches for different inputs.

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

3) The corresponding combination of input and output LEDs lit up for different combination of inputs.
The input gray code LEDs are G3,G2,G1 and G0 and the output binary code LEDs B3,B2,B1 and B0 glow accordingly.

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

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

4) Click "Add" to add the values to the Truth Table.

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

Construction of Gray to Binary Converter using NAND gates only

Battery

G3(MSB)

G2

G1

G0(LSB)

B3(MSB)

B2

B1

B0(LSB)

+5V

-












      TRUTH TABLE                                                    

Serial No. Gray Binary
G3
(MSB)		 G2 G1 G0
(LSB)		 B3
(MSB)		 B2 B1 B0
(LSB)