1) Connect the battery to the circuit.

2) Press the switches 1 and 2 for inputs "A" and "B".

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

3) The LED glows if any one or both the switches are ON and it doesn't glow if both the switches are OFF.

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

Experiment to perform OR gate on kit

Diode 1

Diode 2

Resistor

OR logic implementation using DRL(Diode Resistance Logic)

Switch 1 (A)

Switch 2 (B)

LED

Battery
+
-


Specifications:
1. Battery = 5V
2. Resistor = 1 Kohm
3. Diode D1 & D2 = 1N4007