Digital Camera an electronic sensor to the optical image is converted into electronic data camera, unlike a conventional camera causes chemical changes on film by light to record an image. "Digital" is the English term originally Digital (digital) of Hong Kong-style translation, was brought to the mainland, and Taiwan use the "digital." According to different functions, structure and quality, currently more common digital camera can be divided into consumer digital camera (commonly known as fool the camera), class monocular digital cameras, digital SLR and mirror less interchangeable-lens camera four kinds. Also there are specific needs for highly specialized design of the digital medium format (120-format) camera.
In the digital camera, the light-sensitive charge-coupled device or a complementary metal oxide semiconductor sensor designed to replace traditional chemical photographic film camera function. The captured image data via integrated microprocessor after the adoption of certain coding algorithm stored in the camera's internal digital storage device (memory cards, micro hard disk, floppy disk or a rewritable disc) in. With the decline of flash memory and a substantial increase in prices, the vast majority of digital cameras are using flash memory as a storage solution.
Since the small, lightweight digital cameras, the film that has low cost, easy to save photos to share with post-editing and many other advantages, so that in a short time the rapid spread. Most digital cameras and has a recording, video recording motion pictures and other functions. In 2009, a total of digital cameras sold worldwide (including mobile phones with digital camera function) more than 900 million, while the traditional camera in the market has almost disappeared.
At present, more and more devices such as mobile phones, personal digital assistants, personal computers, terminals and tablet computers are integrated into the digital camera.