A USB camera is a type of digital camera that connects to a computer or other devices using a USB (Universal Serial Bus) cable. This connection allows for easy transfer of images and videos, as well as real-time video streaming. USB cameras are commonly used for video conferencing, online streaming, and capturing photos. These cameras come in various forms, including webcams and standalone digital cameras. Many USB cameras are plug-and-play, meaning they can be used immediately after being connected without the need for additional software. They are popular for their convenience and compatibility with most operating systems.