| A computer is a programmable device that performs | | | | Video display controller is one of the important |
| mathematical calculations and logical operations which | | | | computer components. It produces the output for |
| can process, store and retrieve large amount of data | | | | the computer monitor and is built either inside the |
| quickly. These computers are available in different | | | | motherboard or inside the PCI, AGP in the form of a |
| types and sizes. Two types of computers are, | | | | graphics card. The various computer components are |
| • Portable, | | | | also used for computer storage. It includes Compact |
| • Desktop. | | | | Disc (CD), Digital Versatile Disc (DVD), floppy disk, |
| The computer components are power supply, hard | | | | USB drive etc. |
| disk drives, CD ROM and floppy drives, monitor, | | | | Another component of computer is sound card. It |
| keyboard, mouse and motherboard. The | | | | enables the computer to output the sound to audio |
| motherboard consists of microprocessor, memory | | | | devices and accepts input from a microphone. |
| and drive controllers. It is one of the core | | | | Monitor act as a component of computer which has |
| components of computer and has the support for | | | | screen size and screen type. The screen type is |
| video, sound and networking cards. | | | | divided into CRT and LCD (Liquid Crystal Display). The |
| The mother board also consists of various computer | | | | screen size depends on each computer. |
| components such as Central Processing Unit (CPU), | | | | CPU is the brain of the computer and it processes |
| chipset, Random Access Memory (RAM), BIOS (Basic | | | | everything from basic to complex functions. RAM is a |
| Input Output System) and internal buses. Power | | | | hardware which is used to store and process the |
| supply component includes power cord, switch and | | | | data. Speakers are also one of the components of |
| cooling fan. The main job is that it converts | | | | computer. It produces sound, music, voice based on |
| alternating current into direct current and provides | | | | the data created and it is sent by the sound card. |
| different voltages to the different parts of computer. | | | | |