A computer device for inputting and outputting audio.

A sound card is a device that allows a computer to process and output audio signals. They come in several forms: integrated onto the motherboard, as expansion cards or as a USB device.

an example sound card (Creative Labs Soundblaster Live Value CT4670)

An example PCI sound card (image credit Wikipedia)

The primary use for a sound card is to play back audio controlled by the computer.

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