Expansion Slots and Cards - Types | Graphics | Sound | Modem | TV Tuner

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Expansion slots and Cards

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Placed inside the cabinet on motherboard.
Allows up gradation and adding new cards such as graphics or sound cards.
Are metallic spring fingers that clamp onto the expansion card when inserted.
Each finger matches up with one segment of the card.

Types of expansion cards:

1) Graphics cards:

Used to enhance graphics for 2D or 3D applications such as games, movies etc.

2) Sound cards:

Manages input and output sounds.
Consists of digital to analog, analog to digital convertor and digital signal processor.

3) Modem cards:

Used to communicate between PC's via internet.
Consists of modulator and demodulator to convert incoming and outgoing signals.
Today's PC's have in-built modem.

4) PC cards:

Also called PCMCIA (Personal Computer Memory Card International Association) cards.
Best source of internet and size of the card is equal to the credit card.
Can also be used to increase memory.

5) TV Tuner cards:

Allows you to see television, capture video and surf the internet at the same time.

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