1. Computer Main parts. Hardware Software

2. Hardware Computer hardware (usually simply called hardware when a computing context is implicit) is the collection of physical elements that constitutes a computer system. Computer hardware is the physical parts or components of a computer.

3. Hardware device Mouse: A mouse is a small device that a computer user pushes across a desk surface in order to point to a place on a display screen and to select one or more actions to take from that position.

4. Hardware device keyboard: In computing, a keyboard is a typewriter-style device, which uses an arrangement of buttons or keys, to act as mechanical levers or electronic switches.

5. Hardware device Printer: In computing, a printer is a peripheral which makes a persistent human readable representation of graphics or text on paper or similar physical media.

6. Hardware device Monitor: A monitor or a display is an electronic visual display for computers. The monitor comprises the display device, circuitry and an enclosure. The display device in modern monitors is typically a (TFT-LCD) thin panel, while older monitors used a (CRT) about as deep as the screen size.

7. Hardware device Hard disk: is a data storage device used for storing and retrieving digital information using one or more rigid ("hard") rapidly rotating disks (platters) coated with magnetic material.

8. Hardware device Motherboard: is the main (PCB) found in computers and other expandable systems. It holds many of the crucial electronic components of the system, such as the (CPU) and memory, and provides connectors for other peripherals.

9. Hardware device joystick: A joystick is an input device consisting of a stick that pivots on a base and reports its angle or direction to the device it is controlling.

10. Hardware device webcam: A webcam is a video camera that feeds or streams its image in real time to or through a computer to computer network.

11. Sofware is any set of machine-readable instructions that directs a computer's processor to perform specific operations.

12. Sofware Microsoft office: is an office suite of desktop applications, servers and services for Microsoft Windows and OS X operating systems. It was first announced by Bill Gates of Microsoft on 1 August 1988 at COMDEX in Las Vegas.

13. Sofware Google Chrome: is a freeware we browser developed by Google.

14. Sofware Windows 8: is a personal computer operating system developed by Microsoft as part of the Windows NT family of operating systems.

15. Sofware Internet explorer: is a series of graphical web browsers developed by Microsoft and included as part of the Microsoft Windows line of operating systems, starting in 1995.