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A webcam is a digital video camera connected to a computer to capture and transmit live video and still images over the internet. It is used for video conferencing, live streaming, online meetings, and recording. Webcams can be built directly into a computer, like a laptop, or be an external peripheral connected via USB or a wireless protocol.

How it works: A webcam consists of a lens, an image sensor, and a processor. The lens focuses light onto the image sensor, which captures the video footage. The processor converts the captured data into a digital format that the connected computer can process and display or transmit.

Key functions and uses

Video Conferencing: Enables real-time video calls for personal and professional use.

Live Streaming: Broadcasts live video to online platforms like Twitch or YouTube.

Video Recording: Records video and still pictures for later use.

Security: Can be used as a security camera, though dedicated security cameras are often higher quality.