1. CAMERA (camera or WEBCAM), also known as computer camera, computer eye and electronic eye, is a video input device, which is widely used in video conferencing, telemedicine, real-time monitoring and other fields.
2. Ordinary people can also talk and communicate with video and sound through the camera. In addition, people can also use it for various popular digital images, audio-visual processing and so on.
3. Classification: cameras can be divided into digital cameras and analog cameras. Digital cameras can convert analog video signals generated by video acquisition equipment into digital signals, and then store them in computers. The video signal captured by analog camera must be converted into digital mode by special video acquisition card and compressed before it can be converted into computer.
4. Webcam usually has the basic functions of video shooting/transmission and still image capture. After the image is collected by the camera, it is processed by the photosensitive element circuit and control element in the camera, converted into a digital signal that can be recognized by the computer, and then input into the computer through the parallel port or USB connection, and then restored by software.