Building an AND Gate with a Breadboard: Prove Truth Table with IC Chip

A gate is also one of the basic gates taught to students. An AND gate in an electric circuit for high output (1) only when all its inputs are high. It is usually used in digital logic circuits for decision-making, allowing signals to pass only when specific conditions are met. The procedure for how this circuit is made is the instructions given, the requirements, and the precautions.

Instructions & precautions:

1- First you will need a 5V power supply atleast for the ICs more than that will result in damaging the IC

2- The IC that you will code is 74LS08. and the standard IC has two input one output.

3- The pin number according to the number are shown below 

4- The VCC stands for +ve terminal of the IC chip and GND stands for -ve terminal of the power source. As it requires 4.75V to 5.25V. As for this, we are using analogue and digital trainer. in the next blog we will see how to make same if you do not have any trainer.

5- If this is being made on a digital analog trainer then there is no need for the resistor but if not use the resister of resistance between 100 ohms to 110 ohms.

6- Use a jumper wire to make the connection. Can also make a direct connection by soldering or using a breadboard instead as it proves to be more useful.

7- Use two Switches. In which one end is connected to the positive terminal while the other end is connected to the IC input and these switches are used to control input and output.

8- Finally use an LED light to to identify the high point[1] and low point[0].

9- This IC 74LS08 contains two inputs and one output. You can use the following truth table to ensure the accuracy of the Circuit.

• 0 0 -> 0: Both inputs are off; the LED is off.
• 0 1 -> 0: One input is on; the LED is off.
• 1 0 -> 0: One input is on; the LED is off.
• 1 1 -> 1: Both inputs are on; the LED is on.

10- In this circuit, RED wire means positive terminal and Black Wire means negative terminal, while the resistor is connected to the negative of the LED light.

By following these steps, you have successfully built an AND gate using a breadboard and verified its truth table using an IC chip. This hands-on project helps you understand the basic principles of digital logic gates and their practical applications.

If you want to see a simulation then click on the Watch simulation, to see the simulation.