Operator - GCSE Computer Science Definition

Reviewed by: James Woodhouse

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In the context of GCSE Computer Science, an 'operator' is a special symbol or word that tells the computer to perform a specific task or calculation in a program. Operators are used in programming to handle data and variables, like adding numbers, comparing values, or checking if things are equal. For example, the plus sign (+) is an arithmetic operator that adds two numbers together, while the equal sign (==) is a comparison operator that checks if two values are the same. Operators are important because they help us write instructions that tell the computer exactly what to do.

All specifications will require you to know:

  • Arithmetic operators: +, -, *, /, MOD, DIV, ^

  • Relational (comparison) operators: =, !=, <, >, <=, >=

  • Boolean (logical) operators: AND, OR, NOT

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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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