Combinational logic (AQA A-Level Physics): Flashcards

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Combinational logic
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Logic gates

Electronic switching circuits with digital inputs/outputs

Combinational logic

Multiple logic gates combined for specific output

Truth tables purpose

Show all input combinations and corresponding outputs

No. of combinations for nn inputs

2n2^n

AND gate output is 11 when

Both inputs are 11

OR gate output is 11 when

At least one input is 11

NOT gate function

Inverts input (00 to 11, 11 to 00)

NAND gate output is 00 when

Both inputs are 11

NOR gate output is 11 when

Both inputs are 00

XOR gate output is 11 when

Inputs differ (one 11, one 00)

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