We just learned about the Webcam.
Another part of a computer is the Computer Audio.
When computers first were invented, pretty much the only sounds they could make were loud beeps.
Now computers are able to play music, and you can even record sounds on your computer.
To listen to sound, you need either headphones or speakers, and to talk to your computer you need a microphone.
Some people even wear headsets that are combined microphone and headphones, and they can have audio chats with other people almost like a phone call.
Microphones, speakers and headsets come in all shapes and sizes, from huge speakers that can play really loud music, to expensive microphones for recording songs for music artists, to small headsets that people wear while they are working to talk to people on the other side of the world.
(from: wikipedia - headset (audio))
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