Knowledge about computer: Operating system
Operating system is the main control program of a computer that schedules tasks, manages storage, and handles communication with peripherals.
It provides a convenient environment for the development and execution of programs and attempts to schedule computational activities to ensure good performance of the computing system.
Operating systems can be classified as Multi-user, Multiprocessing, Multitasking and Multithreading.
Generally, the operating system has three principal functions: allocating and assigning system resources; scheduling the use of resources and computer jobs; monitoring computer system activities
Operating systems software defines the 'personality' of the computer by specifying the way in which programs are controlled, files are stored and retrieved, and how the system's hardware components are held together.
DOS (Disk Operating System) was the most popular operating system for IBM and IBM-compatible 16 bit personal computers.
Windows provides not only a graphical user interface (GUI), but also memory management, multitasking, networking and multimedia capabilities.
OS/2 (Operating System/2) is a powerful operating system that can support multitasking and multiple users in networks and is used with 32-bits IBM or IBM-compatible PCs.
Unix is an interactive, multi-user, multitasking operating system that is highly supportive of communications and networking.
Linux is the free Unix.
Mac OS (Machintosh Operating System) supports multitasking and networking and has a highly praised graphical user interface.
Windows XP is Microsoft's most advanced desktop operating system. It inherits 2000's much praised stability and ME's versatility, feature set and ease of use.
The "Last Good Configuration" tool and Automatic System Recovery (ASR)
Windows XP has a wide range of entertainment features and multimedia support designed to fully integrate digital media into the PC.
Other features worthy of mention: computer sharing, protected memory model, Network Setup Wizard, Firewall, Windows Movie Maker, Remote Desktop, etc.
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