Operating system - GCSE Computer Science Definition

Reviewed by: James Woodhouse

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An operating system (OS) is a special type of software that manages a computer's hardware and software resources. It acts like a go-between for the user and the computer hardware, making sure that all the different programs and devices can work together smoothly. When you turn on your computer, the operating system is the first thing that loads and it stays running in the background while you use your device. It handles important tasks like managing files, running applications, and controlling peripheral devices like the mouse and keyboard. Popular examples of operating systems include Windows, macOS, and Linux. They are essential for making a computer usable and helping it perform tasks efficiently.

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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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