flash cards operating systems


flash cards operating systems
Leah Rowe Unknow
Flashcards by Leah Rowe Unknow, updated more than 1 year ago
Leah Rowe Unknow
Created by Leah Rowe Unknow over 8 years ago

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Booting the computer Booting is a start up sequence that starts the operating system of a computer when it is turned on. A boot sequence is the initial set of operations that the computer performs when it is switched on. Every computer has a boot sequence.
Performs basic computer tasks An operating system is a group of computer programs that coordinates all the activities among computer hardware devices. It is the first program loaded into the computer by a boot program and remains in memory at all times.
Provides a user interface Visual part of computer application or operating system through which a user interacts with a computer or a software. It determines how commands are given to the computer or the program and how information is displayed on the screen. Three main types of user interfaces are (1) Command language: the user must know the machine and program-specific instructions or codes. (2) Menus: user chooses the commands from lists displayed on the screen. (3) Graphical user interface (GUI): user gives commands by selecting and clicking on icons displayed on the screen. See also interface.
Provides file management Definition of:file management system. file management system. Software that manages data files. Often called "file managers," and erroneously called "database management systems" or "database managers," file management systems provide the ability to create, enter, change, query and produce reports on one file at a time ...
Handles system resources A resource, or system resource, is any physical or virtual component of limited availability within a computer system. Every device connected to a computer system is a resource. Every internal system component is a resource. Virtual system resources include files (concretely file handles), network connections (concretely network sockets), and memory areas. Managing resources is referred to as resource management, and includes both preventing resource leaks (releasing a resource when a process has finished using it) and dealing with resource contention (when multiple processes wish to access a limited resource).
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