Visual presenter is a device that captures images by a video camera mounted vertically on a base. The video image is then converted to an electronic signal that can be transmitted to other equipments such as projector, large-screen projection television, common television, LCD monitors, etc.. When connected to a computer, it could use related software processing image through collocated images capture cards or embedded communications interface USB, as to perform some functions of scanner and digital camera.
Digital technology is being used more and more in ordinary life, and so are the visual presenters. It has been applied in various occasions, such as education, commercial demostration, conference etc.. In the future, it must be part of people's life and present more colorful images.