Logic Gate Implementation

Implementation of the circuit which shows the working of all the logic gates.

Logic Gates

Jumper cables

Battery

LEDs

Here are the steps to implement all the basic logic gates:

1. NOT gate: A NOT gate is the simplest of all the logic gates. It has only one input and one output. The output is the inverse of the input. To implement a NOT gate, connect a resistor from the input to the output. Then connect a transistor between the output and ground. Finally, connect a power source to the transistor.
2. AND gate: An AND gate has two inputs and one output. The output is high only if both inputs are high. To implement an AND gate, connect two transistors in series. Connect the first transistor’s collector to the second transistor’s base. Connect the second transistor’s collector to the output. Connect the first transistor’s emitter to ground. Connect the second transistor’s emitter to a power source.
3. OR gate: An OR gate has two inputs and one output. The output is high if either input is high. To implement an OR gate, connect two transistors in parallel. Connect the first transistor’s collector to the output. Connect the second transistor’s collector to the output. Connect the first transistor’s emitter to a power source. Connect the second transistor’s emitter to ground.
4. NAND gate: A NAND gate is an AND gate followed by a NOT gate. The output is low only if both inputs are high. To implement a NAND gate, connect two transistors in series. Connect the first transistor’s collector to the second transistor’s base. Connect the second transistor’s collector to ground. Connect the first transistor’s emitter to the output. Connect the second transistor’s emitter to a power source.
5. NOR gate: A NOR gate is an OR gate followed by a NOT gate. The output is low if either input is high. To implement a NOR gate, connect two transistors in parallel. Connect the first transistor’s collector to ground. Connect the second transistor’s collector to ground. Connect the first transistor’s emitter to the output. Connect the second transistor’s emitter to a power source.
6. XOR gate: An XOR gate has two inputs and one output. The output is high if the inputs are different. To implement an XOR gate, connect four transistors in a diamond shape. Connect the first transistor’s collector to the second transistor’s base. Connect the second transistor’s collector to the third transistor’s base. Connect the third transistor’s collector to the fourth transistor’s base. Connect the first transistor’s emitter to a power source. Connect the fourth transistor’s emitter to the output. Connect the second and third transistors’ emitters to ground.