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What are the functions of an operating system?
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10 steps4.1.1 Functions of an Operating System
Process (CPU) management
The OS creates, schedules, and terminates processes.
It allocates CPU time to processes using scheduling algorithms.Memory management
The OS allocates and deallocates memory to processes.
It handles virtual memory, paging, and segmentation.File management
The OS manages file creation, deletion, access, and storage on secondary devices.
Device management
The OS controls I/O devices through drivers and buffers data transfer.
Security and protection
The OS ensures data security, user authentication, and resource protection.
4.1.2 Characteristics of an Operating System
Multitasking
The OS allows multiple programs to run concurrently by switching between them.
Multi-user support
The OS enables multiple users to access the system simultaneously.
Reliability
The OS recovers from errors and provides fault tolerance.
Portability
The OS can run on different hardware platforms.
Efficiency
The OS optimizes resource utilization for better performance.
4.1.3 Examples of an Operating System
Windows, Linux, macOS, Android, iOS, Unix
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