Concept of Disk Operating System

 An operating system is a set of programs that helps User to controll and manage the hardware and software of Computer.There are many types of Operating system. These are MS DOS,Window OS, UNIX And Unix.Every operating system has its own unique feature and function. Among all MS DOS is one of the best operating system for beginner.

The full form of MS DOS is Microsoft Operating System. It is developed by Microsoft Ltd. It is a single user operating system. It is 16 bit operating system so it is not used for multitasking or multipurpose use.It is a program that coordinates hardware and software of Computer.It also cares that every part of Computer perforn their work according to the instruction of User. It also manages file and allocate resource according to need of User.

In other words we can say that Dos uses the Input device like Keyboard,Screen, Printers, Modem etc and software of Computer according to instruction of User to fulfill their function.

Feature of DOS-

There are many features DOS possess. These features are as below-

1.It is a single user operating system.

2.It operates with Assembler.

3.It is the first operating system for Personal Computer.

4.It is a collection of programs.

5.It uses a command line interface.

6.It is a 16 bit operating system.

Function of DOS-

There are many functions DOS performs. These functions are as below-

1.It manages disk file,allocate system resource according to the need of User.

2.It manages the memory of Computer and allocates memory according to requirement of system.

3.It manages all Input and Output devices of Computer and instruct to work according to the instruction of User.

4.It divides complex task into many parts and perform it by a systematic way and gives result to User.

5.It helps User to store file and use it according to his need requirement.

6.It interfaces between Computer and Users.