Expansion Cards

Expansion Card

An expansion card is a type of computer hardware device/electronic board that can be placed inside the expansion slot of the computer to allow the computer have additional features that the motherboard does not have. There are many types of expansion card such as: interface card, modem card, Network card, sound card, video card and many more.

Sound Card is a type of expansion card used to send audio data to a audio device from the computer system such as headphones and speakers. The average price of a sound card is  between £20-£30.

The following video gives more information on sound: http://www.youtube.com/watch?v=V6K0DgDByfU

Network Card is a type of expansion that connects the computer to network cable wires so that data can be sent to and from different computer system . It does this by converting data sent by one computer which is then used by the network cable and transfers that data to another computer. At the same time, the Network card translates the data coming from the cable into bytes so that the computer's CPU can read it. The average price is around £25. 










Graphics/Video Card is a type of expansion 
card that allows the computer to send information to a video display device such as a monitor or projector.  The average price for a graphics/video card is £25. 

TV Card is a type of expansion card that allows television signals to be received from the computer system. One type of TV card is Analog television card which outputs raw video stream. The average price for TV card is at £30. 

SCSI card stands for Small Computer System Interface. This type of card is used to send and receive data to SCSI-enabled devices like hard drives and printers. A SCSI card has its own processing chip and does not need to rely on the CPU (Central Processing Unit). The average price of SCSI is at around £40. 

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