At the very least, one would expect that any computer should be able to add two numbers. With the logic modules this becomes a reality! We humans think in decimal—base ten, with digits 0 through 9—probably as a result of the fact that we have ten fingers. Computers, on the other hand, do all of their internal work in binary—base two, with the digit 0 representing OFF and 1 representing ON. In this lesson, you will learn how to create a circuit that can add two bits. This circuit is known as a HALF ADDER.

See the link below for a pdf file with a detailed lesson description!

**Duration:** 45 min

**GRADE LEVEL**

High School (ages 14-17)

Middle School (ages 11-13)

**DIFFICULTY**

Intermediate

**SUBJECT**

Technology

Math

Engineering

**MODULES & ACCESSORIES USED (14)**

button (2)

double AND (1)

led (2)

power (1)

rgb led (2)

split (2)

fork (1)

mounting boards (1)

XOR (1)

battery + cable (1)

ADDITIONAL FILES

https://lb-community.s3.amazonaws.com/uploads/user/13025/60f56182-9012-4b18-888a-0c9cbc2d6e36.pdf