Logic gate: OR - GCSE Computer Science Definition

Reviewed by: James Woodhouse

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A logic gate is a tiny electronic device that makes decisions in computers and electronic devices. The OR gate is a type of logic gate that works like a decision-maker using a simple rule: if at least one of its inputs is "on" (which means it is given the value 1), the output will be "on" as well. If both inputs are off (given the value 0), then the output will be off. Imagine it like a light switch with two buttons; if either button (or both) is pressed, the light turns on. In GCSE Computer Science, understanding how OR gates work is important because they help control how computers process information by combining different input signals to produce the desired output.

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James Woodhouse

Reviewer: James Woodhouse

Expertise: Computer Science & English Subject Lead

James graduated from the University of Sunderland with a degree in ICT and Computing education. He has over 14 years of experience both teaching and leading in Computer Science, specialising in teaching GCSE and A-level. James has held various leadership roles, including Head of Computer Science and coordinator positions for Key Stage 3 and Key Stage 4. James has a keen interest in networking security and technologies aimed at preventing security breaches.

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