Computer Components

what is hardware and software.


Hardware is something you can physically touch. it is a collection of physical parts. such as monitor mouse keyboard etc. It also includes all the parts inside the computer case, such as the hard disk drive, motherboard, video card, and many others.


Software is something you cant touch. you cannot touch windows or power points. Without software, computers would be useless. For example, without your Internet browser.

inputs and outputs


What is input?

An input is data that a computer receives. An output is data that a computer sends.Computers only work with digital information. Any input that a computer receives must be digitized.

Often data has to be converted back to an analogue format when it's output, for example the sound from a computer's speakers.


A result produced by a computer that is internal to the system (from one program or process to another) or external to it (from a program or process to an output device) but internal to an output device (modem,monitor, printer, etc.).