An operating system is a system program that controls and organises the general operation of the
computer.
In computing, booting (or booting up) is the initialization of a computerized system. The system can
be a computer or a computer appliance. The booting process can be "hard", after electrical power to
the CPU is switched from off to on (in order to diagnose particular hardware errors), or "soft", when
those power-on self-tests (POST) can be avoided. Soft booting can be initiated by hardware such as a
button press, or by software command. Booting is complete when the normal, operative, runtime
environment is attained.
Application software is the software that lets us do something with our computer. In other words,
the software you use to do the things you like to do, things like playing games, going online, listening
to music and typing papers or creating presentations. The operating system software, or operating
system or OS, is the software your computer uses to process start-up instructions, interpret and
communicate between applications software and devices used and to maintain your system.
controls the backing store and peripherals such as scanners and printers
Windows 7 is the most common operating system tody
windows,mac,linux
controls the backing store and peripherals such as scanners and printers deals with the transfer of
programs in and out of memory organises the use of memory between programs organises
processing time between programs and users maintains security and access rights of users deals
with errors and user instructions allows the user to save files to a backing store provides the
interface between the user and the computer - for example, Windows Vista and Apple OSX. For more
information, see the User Interfaces Revision Bite. issues simple error message
A graphical user interface (GUI, pronounced "gooey") is a computer environment that simplifies the
user's interaction with the computer by representing programs, commands, files, and other options
as visual elements, such as icons, pull-down menus, buttons, scroll bars, windows, and dialog boxes.
By selecting one of these graphical elements, through either use of a mouse or a selection from a
menu, the user can initiate different activities, such as starting a program or printing a document.
An operating system (sometimes abbreviated as "OS") is the program that, after being initially
loaded into the computer by a boot program, manages all the other programs in a computer. The
other programs are called applications or application programs. The application programs make use
of the operating system by making requests for services through a defined application program
interface (API). In addition, users can interact directly with the operating system through a user
interface such as a command language or a graphical user interface (GUI)
In computing, a graphical user interface is a type of interface that allows users to interact with
electronic devices through graphical icons and visual indicators such as secondary notation, as
opposed to text-based interfaces, typed command labels or text navigation.
The data that we work with on computers is kept in a hierarchical file
system in which directories have files and subdirectories beneath them.
Although we use the computer operating system to keep our image data
organized, how we name files and folders, how we arrange these nested
folders, and how we handle the files in these folders are the fundamental
aspects of file management. The operating system's organization of our
data can be enhanced by the use of cataloging programs, which make
organizing and finding image files easier than simply relying on the
computer's directory structure. Another feature of catalog programs is that
they can streamline backup procedures for better file protection.
The user interface, in the industrial design field of human–machine interaction, is the space where
interactions between humans and machines occur. The goal of this interaction is effective operation
and control of the machine on the user's end, and feedback from the machine, which aids the
operator in making operational decisions. Examples of this broad concept of user interfaces include
the interactive aspects of computer operating systems, hand tools, heavy machinery operator
controls, and process controls.