Logic gate: AND - GCSE Computer Science Definition

Reviewed by: James Woodhouse

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A logic gate is a tiny part of a computer that helps it make decisions by processing signals. The "AND" logic gate is a type of gate that needs two things to be true for it to send a true signal forward. Imagine you have two switches, and both need to be turned on for a light to work. In the case of the AND gate, the input is similar to these switches, and the output is like the light bulb. So, only when both inputs are 'on' or 'true' (both representing the number 1) does the AND gate give an output of 'true'. If any one of the inputs is 'off' or 'false' (representing the number 0), the output will also be 'false'. This makes the AND gate important in computer operations for making sure that certain conditions are met before proceeding with certain tasks.

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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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