Perfect Computer Notes

What is a User Interface? Explain its types. User Interface User Interface is the set of items on screen to interact with the computer . A user interacts and uses computer with the help of these items. For example, Windows Desktop is an example of user interface. Similarly Dos Prompt is also an example of user interface. Types of User Interface There are two main types of user interface: 1) Graphical user interface (GUI) 2) Command line user interface (CLI) 1) Graphical User Interface Graphical user interface or GUI provides different graphical items like windows, menus, tool bars and icons etc. A mouse or any other pointing device is used to work with these items. Commonly we select different commands from menu or toolbar with the help of mouse. We need not to type commands. We can double click on a file or folder to open it. We can double click on a shortcut to open a program. GUI is very easy to interact the computer. All versions of Windows, Macintosh, OS/2 and som

Topic: Explain Different Types Of Operating Systems with Examples Q. Explain different types of operating system What is an Operating system or OS The operating system is the most important program that runs on a computer. Every general-purpose computer must have an operating system to run other programs and applications. The Operating system or OS provides the base on which other programs and applications are installed and executed . Operating systems perform basic tasks in computer systems, like: Basic Functions of Operating System Providing the user interface Receiving the input from the keyboard, Sending  the output to the monitor screen,  Keeping track of files and folders on the disk, and controlling the functions of peripheral devices such as printers, etc. Different Types of Operating Systems With Examples in Detail Different types of operating system with examples Following are different types of operating system with examples: Explain differe

Topic: Different Functions Of Operating Systems What is an Operating System? Operating systems are an important type of system software. They provide a lot of facilities to the users. An operating system can be defined as software that acts as an interface between the end user and the hardware. Computer users can use computer systems that have an OS or operating system installed. For example, Microsoft Windows is a popular PC operating system. What is the Importance of Operating System in Computer? Each computer must have at least one operating system to run other programs. for example, if there is no operating system in your computer, you will not be able to use the computer. When you install an OS like Microsoft Windows on your computer, it displays its GUI that is Windows desktop on startup. Now you can use your computer with the help of graphical user interface elements like icons, menus, shortcuts on your computer screen. Similarly if you wish to install application prog