Aim:
To build and test real AND and OR gate circuits using push buttons and an LED.

Requirements:

• 2 push buttons

• Breadboard

• Battery (3V or 9V with resistor)

• LED

• Jumper wires

Steps:

1. Build OR Gate Circuit

   • Connect both push buttons in parallel.

   • Connect them to the LED and power supply.

   • Press either button.

   • LED should light up.

2. Build AND Gate Circuit

   • Connect both push buttons in series.

   • Connect them to the LED and battery.

   • Press both buttons at the same time.

   • LED should light up only when both are pressed.

Working:

Students see how logic gates work in real-life circuits:

• OR gate = Any one ON → Output ON

AND gate = All ON → Output ON