Summary

System Software (part 1)

1. Operating System:

The operating system (OS) is the core software that manages a computer's hardware and software resources, providing an interface for users to interact with the system. It controls tasks like file management, user access, and hardware communication. An OS ensures efficient resource allocation, security, and smooth execution of applications.

2. Multitasking:

Multitasking is the OS ability to run multiple programs simultaneously. It allows users to switch between applications, improving productivity. The OS divides CPU time among tasks, giving each a share, and quickly switches between them, creating the illusion of concurrent execution.

3. Memory Management:

Memory management involves the OS efficiently using computer memory (RAM). It allocates memory to programs, tracks available space, and ensures data integrity. If memory becomes scarce, it swaps data between RAM and storage to maintain system performance.

4. Device Driver:

Device drivers are software modules that enable communication between the OS and hardware devices (e.g., printers, graphics cards). They translate OS commands into device-specific instructions, ensuring proper functioning and compatibility.