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Operating Systems · Types of OS · System Software vs Application Software

CSZoneAQA GCSE Computer Science 8525

System Software vs Application Software

Two Categories of Software

SYSTEM SOFTWARE

Manages the hardware and provides a platform for application software to run. Works in the background. Examples: OS, drivers, utilities.

APPLICATION SOFTWARE

Programs that perform specific tasks for the user. Run on top of the OS. Examples: Word, Chrome, Spotify, games.

Key distinction:System software makes the computer work. Application software makes the computer useful.

The Operating System

Core System Software

The Operating System (OS) is the most important piece of system software. It acts as an intermediary between the user, application software, and the hardware.

Examples: Windows 11, macOS Ventura, Linux, Android, iOS

Without an OS, the user cannot interact with the hardware

Manages: processes, memory, files, security, devices, user interfaces

Types of Operating System

Different OS for Different Purposes

Desktop/Laptop OS — Windows, macOS, Linux. GUI with windows, icons, menus

Mobile OS — Android, iOS. Optimised for touchscreens, battery life, mobile connectivity

Embedded OS — Real-time OS (RTOS) in washing machines, car ECUs, medical devices. Specific purpose, minimal resources

Server OS — Windows Server, Linux server editions. Handle multiple users, stability, security

Exam Practice

Have a go at this question

AQA-style question

Explain the difference between system software and application software, giving one example of each.

4 marks

System software manages the computer hardware and provides a platform for applications to run [1], e.g. Windows/Linux (operating system) [1]. Application software performs specific tasks for the user [1], e.g. Microsoft Word (word processor) / Google Chrome (web browser) [1].

Key Takeaways

What to Remember

System software — manages hardware, invisible to users (OS, drivers, utilities)

Application software — user-facing programs that perform specific tasks

OS = intermediary between user, apps, and hardware — essential for the computer to function

Types: Desktop (Windows), Mobile (Android/iOS), Embedded (RTOS), Server