Logic Gates - KS3

What is binary?

A system of numbers using only two digits 0 and 1 (Base 2 system). It is used as a language by computers.

1

Switch is turned ON

0

Switch is turned OFF

What is denary?

Denary is a base 10 number system with 10 digits 0-9.

An AND gate is...?

A logic gate that has two inputs, A and B. If both inputs are '1' it will output '1', otherwise it will output '0'.

AND gate symbol

An OR gate is...?

A logic gate that has two inputs, A and B. If either or both of the two inputs is '1', its output is '1'

OR gate symbol

An NOT gate is...?

A logic gate that has one input, A. If the input is '0', its output is '1'. If the input is '1', its output is '0'

NOT gate symbol