IPO - Input, Processing and Output

A. INPUT DEVICES

Keyboard - is an input device used to enter characters and functions into the computer system by pressing buttons, or keys. It is the primary device used to enter text. A keyboard typically contains keys for individual letters, numbers and special characters, as well as keys for specific functions.

Mouse - is a device that accepts text and graphic output from a computer and enables us to get computer output on paper. It is one of the most popular computer output devices we often use to get information on paper - called hard copy.

B. PROCESSING DEVICES

Central Processing Unit (CPU) - is often referred to as the brain of the computer and handles all instructions it receives from hardware and software running on the computer.

Motherboard - is a printed circuit board that is the foundation of a computer, located on the back side or at the bottom of the computer chassis. It allocates power and allows communication to the CPU, RAM, and all other computer hardware components.

C. OUTPUT DEVICES

Monitor - is an output device that is used to display video and graphical information generated by the computers graphics adapter, allowing the user to interact with the computer. 

Printer - is a device that accepts text and graphic output from a computer and enables us to get computer output on paper. It is one of the most popular computer output devices we often use to get information on paper - called hard copy.