An Introduction to Operating System

Things to remember

• Computer system is a collection of different hardware components.
• An OS is a collection of system program that together controls the operations of computer system. Example:UNIX, MS-DOS, MS-Windows, Linux etc.
• in broad approach, we can classify the operating system on the basis user interface like command or character user interface operating system and graphical user interface operating system.
• CUI provides the interactive terminal where user could enter the command to interpret.
• GUI consists of different components such as text box, icon, desktop, pointing devices etc.
• MS-DOS stands for Microsoft Disk Operating System.
• MS-DOS has three essential files and many command files. These essential files are: IO. SYS (Input Output System), MS DOS, SYS (Microsoft Disk Operating System), and COMMAND.COM.