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Princess Mahlea I. Pendaliday

What is Operating System?

the software that supports a computer's basic functions, such as scheduling tasks, executing applications, and controlling peripherals. The operating system is the most important program that runs on a computer. Operating systems perform basic tasks, such as recognizing input from the keyboard, sending output to the display screen, keeping track of files and directories on the disk, and controlling peripheral devices such as disk drives and printers. Every general-purpose computer must have an operating system to run other programs and applications.

Kind of Operating System

1. MS-DOS

Microsoft Disk operating system, MS-DOS is a non-graphical command line operating system derived from 86-DOS that was created for IBM compatible computers. MS-DOS originally written by Tim Paterson and introduced by Microsoft in August 1981 and was last updated in 1994 when MS-DOS 6.22 was released. MS-DOS allows the user to navigate, open, and otherwise manipulate files on their computer from a command line instead of a GUI like Windows.

Today, MS-DOS is no longer used; however, the command shell, more commonly known as the Windows command line is still used by many users. The picture to the right is an example of what an MS-DOS window more appropriately referred to as the Windows command line looks like running under Microsoft Windows.

DOS is an interpreter which creates an interface between hardware and software. The keyboard, mouse, monitor, printer and processor are hardware and programs. DOS is a program loaded into the memory (RAM) of user’s personal computer before execution of any application. It creates an environment for managing the resources and execution of any program having extension .Exe, .Com, .Bat. Dos are a single user operating system. A single user operating system caters to a single user and all the resources are available to this user. DOS works mostly on Micro Computers. The DOS software is divided...