KEY STAGE THREE
COMPUTING
THEORY9. Summary
Computers and logic circuits use binary numbers to process information.
A logic gate is made up of one or more inputs with one output and some logic being applied in-between.
The three types of logic gates described are the NOT, AND, OR gates. These are:
| Logic type | Diagram | Table |
| NOT | ![]() |
|
| OR | ![]() |
![]() |
| AND | ![]() |
![]() |
Logic gates can be combined to form more complicated circuits.
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