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It is the case that holds the motherboard, CPU, power supply, hard drive, memory, disk drives and expansion cards that are plugged into the motherboard.

A collection of components designed to process and store data. It comprises at least one input device, a processing unit, an output device, and a storage device, and may contain a communications device.

It is the main circuit board with electronic circuitry to which all the other PC components are plugged or connected, serving as centralised control and as a hub for the flow of information.

It also called the PROCESSOR or popularly known as CPU (Central Processing Unit). It is the brain or intelligence of a Computer System.

Written programs, commands or instructions that tells the computer to do things. System Software

Application Software

System Software

programs designed to operate the computer hardware and to provide and maintain a platform for running application software.

Application Software

programs designed for a specific purpose like word processor, spreadsheet, media players and database applications.

Physical component of the computer system. These are the tangible parts or the parts that can be touched. Input

Processing

Output

Storage

Communication

Process data to form an informationInput

Provides data to the computer. Processing

Presents data/info acceptable to the user. Output

Preserves data/info for retrieval. Storage

Transmit data/info to other computers globally. Communication

Keyboard

Used to type in information to a computer system.

Mouse

Used to control an on-screenpointer.

Joystick

Used mostly for playing games. The stem can be moved omni-directionally to control the movement of an object on the screen.

Trackball

A mouse on its back it consists of a ball resting on two rollers at right angles to each other, which translate the ball's motion into vertical and horizontal movement on the screen.

Graphics Tablet

A flat plastic rectangle with subsurface electronics, used in conjunction with pointing devices, PUCK,a mouse-like device with buttons for selecting items or choosing commands and STYLUS, a pen for drawing or pointing.

Drum Scanner

A high-quality image-capture device. The image to be captured is wrapped around a drum that spins very fast while a light source scans across it to capture a digital version of the image.

Flatbed Scanner

This scanner type has a flat plane of glass where the item being scanned is placed. The scanning head moves along a track on the underside of the glass to capture an image of the item onthe glass.

Sheet-fed Scanner

A scanner that allows only paper to be scanned rather than books or other thick objects. It moves the paper across a stationary scan head.

Handheld Scanner

A scanner with a handle and typically a trigger button for switching on the light source.

Microphone

Allows the computer to receive and record sound. Necessary for voice recognition software and any software that need to record sound.

Digital Camera

Takes pictures without film and stores your snapshots as digital files in its memory or on a disk.

WebCam

Takes pictures without film and stores your snapshots as digital files in its memory or on a disk.

Processor

The brain or intelligence of a Computer System. It performs the systems calculating and processing.

Monitor

Displays characters and graphics on a television-like screen.

CRT MonitorLCD MonitorTOUCH-SCREEN Monitor

Printer

a peripheral which produces a hard copy (permanent readable text and/or graphics) of documents.

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Speaker

A device that converts analog audio signals into the equivalent air vibrations in order to make audible sound.

Digital Projector

A device that connects to a computer via cabling to enable the computer monitor display to be enlarged and projected onto a screen.

Hard Disk

Located within the system unit but are external to the main circuit board. These devices store data as charges on a magnetically sensitive medium or on a disk coated with a fine layer of metallic particles.

Flash Disk

consists of flash memory data storage device integrated with a USB (Universal Serial Bus) 1.1 or 2.0 interface. USB flash drives are typically removable and rewritable most weigh less than 30 g (1 oz)

CD/DVD

Uses optical laser technology to store data into the disk.

Network HUB

is a device that connects multiple computers into a network.

Modem

A digital-to-analogue device that links computers to the telephone network. A modem enables digital data to be modulated so that it is compatible with the analogue signals carried by the telephone system.

Router

An electronic device that is used to forward data between computer networks.

Network Cable

are used to connect one network device to other or to connect two or more computers to share printer, scanner etc. Different types of network cables like Coaxial cable, Optical fiber cable, Twisted pair cables are used depending on the network's topology, protocol and size.

NIC/Lan Card

is a computer system hardware component designed to allow computers to communicate over a computer network.