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Electrical Engineering

Use System Modeler to construct and study electrical circuits, power electronics, and electrical machinery. Combine electrical and mechanical components to build complete system models. Perform analysis tasks and measure performance.

Combinational Circuits: Create a 3-Bit Adder

Combinational circuits are used to perform Boolean algebra on input signals and on stored data. They are made up of basic logic gates that are combined to produce powerful switching circuits. In this lab, you will create a 3-bit adder and connect to hardware using Arduinos.

Create Your Model

Create a model of a 3-bit adder and connect it to pushbuttons to obtain input from the user. In the following model, two numbers of three bits, A and B, are added to obtain the sum S.

Combinational circuit of a 3-bit adder.

Test Your Model

The user sends the digital inputs using pushbuttons. The final output can be displayed using LEDs.

The combinational circuit is tested using Arduino Leonardo.

Explore the College Digital Electronics labs to learn more