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Submitted by gautham_rajan on February 14, 2006
Category: Technology
Words: 1664 | Pages: 7
Views: 232
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SOFTWARE
A set of instructions that directs a computer's hardware to perform a task is called a program, or software program. Software comprises the entire set of programs, procedures, and routines associated with the operation of a computer system. The two main types of software are system software and application software.
System software controls a computer's internal functioning, chiefly through an operating system , and also controls such peripherals as monitors, printers, and storage devices. Utilities and compilers are also parts of system software.
Application software, by contrast, directs the computer to execute commands given by the user and may be said to include any program that processes data for a user. Application software thus includes word processors, spreadsheets, database management, inventory and payroll programs, and many other "applications." They can be of three main types:
1. Office Suites
2. Graphic Applications
3. Communication Applications
SYSTEM SOFTWARE
Operating System:
The operating system is a remarkably complex set of instructions that schedules the series of jobs (user applications) to be performed by the computer and allocates them to the various hardware systems of a computer, such as the central processing unit, main memory, and peripheral systems. It is the master program based on which all other program work. Popular operating systems are Microsoft Desk Operating System (MS-DOS), Microsoft Windows, Red Hat Linux, Apple Mackintosh, etc.
MS-DOS: Released in 1981, MS-DOS is a command-line operating system which requires the user to enter all commands from a command prompt. It performs two types of functions:
1. Automatic functions which read data, allocate memory units and control peripheral devices.
2. Command functions which are carried out as instructed by the user.
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