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Concept of OS
Unit2
Aug 8, 2024
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Operating System (OS)
A collection of system software programs that manages computer hardware and software resources, providing common services for other programs.
Functions of OS
1. Resource Management
The process of planning, scheduling, and allocating resources effectively to achieve organisational goals, making the most of available resources
2. Memory Management
Controls allocation, usage, and deallocation of RAM, ensuring efficient utilisation by running programs.
3. Input/Output (I/O) Management
Acts as a mediator between software applications and peripheral devices like printers, keyboards, and storage drives, handling data transfer requests.
4. Processor Management
Schedules tasks for efficient use of the CPU, allocating processing time to different programs and preventing any one from dominating.
5. Bootstrap Process
• Initialises hardware components.
• Loads the operating system kernel into memory.
• Starts essential system processes.
6. Process Management
Manages the life cycle of running programs (processes).