The principle is to change light signals into electronic signals in digital form by means of a charge couple device.The captured images may be shown on a TV or computer screen or print out by a printer.

• 它的原理是用电荷偶合器件把光的讯号变为数码的电子讯号。拍摄到的影像可以在电视或电脑的荧幕上显现或用印字机把它印出来。