OS is used to Coordinatesand monitor ALL activities/ performances among computer hardware resources. Run several programes at a time. (e.g: Games, Musics, Microsoft Offices etc.) Provide file management and other utilities. Store memory – Non-Volatile memory
Monitor, asses and report information about programs, system resources and devices. Provide users interfaces Administer security
Famous OS Macintosh (Apple) Unix Window Microsoft
OS: Booting System BS is the process of starting or restarting a computer Warm Boot : Restarting PC that is switched on.
Cold Boot:
Switch on the PC Example of warm boot
OS: Booting System BS contains BOOT DISK - Contains system files that will start PC when PC cannot switched on. BOOT DISK = Recovery Disk *loss of boot disk will jeopardize the whole PC. Never ever lose it.*
OS: Graphical User Interface (GUI) means users like us, interact with menus and visual images such as in the photos.
OS: MULTITASKING Running 2 or more programs at the same time. - Foreground shows the prog. you are currently using. - Background shows the prog. that are running but not in use.
OS: Internet Connection Guides users through setting up connection between PC and Internet service provider.
OS: Monitor Performances - It overlooks the performances done by users. - It checks the processes occurring at that time. - It assesses information about the programs and devices.
OS: Network OS Allow users to share resources. Watches over the security by providing password or user name
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