Question

What is the Expansion of COMPUTER ?

Answer 1

In computing, the expansion card,expansion board, adapter card or accessory card is a printed circuit board that can be inserted into an electrical connector, or expansion slot, on a computer motherboard, backplane or riser card to add functionality to a computer system via the expansion bus.

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Answer 2

Sorry for rewrite...
I read something else...
Here is ur answer..

In computing, the expansion card,expansion board, adapter card or accessory card is a printed circuit board that can be inserted into an electrical connector, or expansion slot, on a computer motherboard, backplane or riser card to add functionality to a computer system via the expansion bus.

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