Peripherals refer to those devices which are optional for the computer functionality. They are attached to the computers for using it for multiple purposes. Some of the examples of peripherals are printers, scanners, digital cameras etc. All these peripherals can be easily attached to the computer through a Universal Serial Bus (USB) port. These peripherals offer a big advantage of making the usage of computers for multiple purposes. On the basis of their functionality peripherals can be divided into different categories of printers, sound, visual, storage and networking.

The CD ROM, CD-RW, CD-R, DVD-ROm, DVD-RW, DVD-R, Floppy Disk, Microphone, Webcam, Image Scanner, Printer, Sound Card, Speakers, Graphics Card, Modem, Network Card all belong to the above mentioned categories of peripherals.World Phone