Webcams,+digital+cameras,+digital+video+cameras

= =

=Strand 3: Input Devices= 3.1 Hardware Webcams, digital cameras, digital video cameras



A video camera is a camera used for video capture, first developed by the television industry but now common in other applications as well. The earliest video cameras were used by the BBC in experimental broadcasts through the 1930s. The design was based on the cathode ray tube which was widely used until the 1980s, cameras were based on solid-state image sensors. This eliminated common problems with tube technologies such as burn-in.

A webcam is a video capture device connected to a computer, often using a USB port or, if connected to a network, Wi-Fi. The most popular use is for webcam was for seeing friends and families. This can be used in messenger programs such as Windows Live Messenger, Skype and Yahoo. Other uses include the recording of video files or even still-images. Webcams are known for there low costs and mobility making them a very efficient way of keeping in contact using video.

A digital camera is a camera that takes both video and still photographs. Many compact digital still cameras can record sound and moving video as well as still photographs. In the Western market, digital cameras outsell their 35 mm film competitors. Digital cameras can do things film cameras cannot. They can display images on a screen immediately after they are recorded, storing thousands of images on a single small memory device, recording video with sound, and deleting images to free storage space. Some can crop pictures and perform other image editing features.