Operating Systems (OS)
What is an Operating System?
An operating system is software that manages computer hardware resources and provides a platform for running application software.
Nodes of Operating Systems
- Process Management: Managing running programs and processes
- Memory Management: Managing system memory and allocating it to programs
- File System Management: Managing files and directories
- Input/Output (I/O) Management: Managing input/output operations between devices
- Security: Providing mechanisms for controlling access to computer resources
Types of Operating Systems
- Desktop OS: Windows, macOS, Linux
- Mobile OS: Android, iOS
- Server OS: Windows Server, Linux Server
- Embedded OS: Used in embedded systems, such as robots, appliances
Functions of Operating Systems
- Hardware Abstraction: Providing a layer of abstraction between hardware and software
- Resource Allocation: Managing system resources, such as memory, CPU time
- Interrupt Handling: Handling interrupts generated by hardware devices
- Job Scheduling: Scheduling jobs (programs) for execution
Examples of Operating Systems
- Windows
- macOS
- Linux
- Android
- iOS
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