Computer Components

Computer components: 

Input
An input device is any hardware device that sends data to the computer, without any input devices, a computer would only be a display device and not allow users to interact with it, much like a TV. In the picture to the right, is a Logitech trackball mouse and an example of an input device. Below is a complete listing of all the different computer input devices that can be used on a computer.
Examples: keyboard, webcam, microphones and etc.

Output
Any peripheral that receives or displays output from a computer. In the picture to the right, is an inkjet printer and a good example of an output device that can make a hard copy of anything on a computer. Below is a listing of all the different computer output devices found on a computer.
Examples: speaker, headphone, monitor and etc.

Storage
A term used to describe any location where information can be held permanently or temporarily for later use. A computer commonly has two storage types: internal and external. For example, an internal storage is a device such as a hard drive and an external removable storage is a device such as a floppy disk drive. Below are examples of forms of storage used on a computer.

• Primary storage:  Alternatively referred to as internal memory and main memory,primary storage is a storage location that holds memory for short periods of times while the computer running. For example, computer RAM and cache are both examples of a primary storage device. This storage is the fastest memory in your computer and is used to store data while it's being used. For example, when you open a program data is moved from the secondary storage into the primary storage.
• Secondary storage:  Alternatively referred to as external memory and auxiliary storage,secondary storage is a storage medium that holds information until it is deleted or overwritten regardless if the computer has power. For example, a floppy disk drive and hard drive are both good examples of secondary storage devices. As can be seen by the below picture there are three different storage on a computer, although primary storage is accessed much faster than secondary storage because of the price and size limitations secondary storage is used with today's computers to store all your programs and your personal data.