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Logic Gates Flashcards
OCR GCSE J277 Computer Science specification
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Logic Gate
A device that performs a logical operation on one or more binary inputs to produce a single binary output.
AND Gate
A logic gate that outputs 1 only if all inputs are 1.
OR Gate
A logic gate that outputs 1 if at least one input is 1.
NOT Gate
A logic gate that outputs the opposite of the input (inverts the input).
AND Gate Symbol
A D-shaped symbol used to represent the AND gate in logic diagrams.
OR Gate Symbol
A curved shape symbol used to represent the OR gate in logic diagrams.
NOT Gate Symbol
A triangle with a small circle at the output used to represent the NOT gate in logic diagrams.
AND Gate Truth Table
Inputs: 0,0 → Output: 0; Inputs: 0,1 → Output: 0; Inputs: 1,0 → Output: 0; Inputs: 1,1 → Output: 1.
OR Gate Truth Table
Inputs: 0,0 → Output: 0; Inputs: 0,1 → Output: 1; Inputs: 1,0 → Output: 1; Inputs: 1,1 → Output: 1.
NOT Gate Truth Table
Input: 0 → Output: 1; Input: 1 → Output: 0.
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