|GCSE >Logic< Algebra Gates Latch NAND Array Schmitt NOT Truth Tables|
Logic circuits are built from switches or gates that obey simple rules.
The lamp comes on, only if both switches are on.
AND Logic Example - Operate the machine, only when all the safety doors are closed.
The lamp comes on if either or both switches are on.
OR Logic Example - Sound the fire alarm if one or more fire alarm glasses are broken.
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