According to a standard definition, a digital camera is "a camera that produces digital  images that can be stored in a computer, displayed  on a screen and printed". Years ago people used to possess two different devices in order to take pictures and make videos. The creation og digital cameras was  motivatedmainly by two factors. First, need to spare space. Second, make it more comfortable for people to do both things with higher    quality  results. The multi-functionalism of digital cameras and the  combination of several devices in one make it a popular choice for a modern man. For years a digital camera has been   unaffordable  for many families. However, the  variety of digital cameras and various prices nowadays make it possible for almost every  single family to buy a digital camera. With increasingly  fierce competiton, the digital camera  manufacturerssatisfy customers with lower prices but best quality standards. 






根据标准定义，数码相机是一种能形成可被储存在电脑中的数码图象的相机。这种图象可显示在屏幕上，也可以被打印。过去人们常常要购置两种装置来完成摄像和制作影片的要求。发明数码相机背面的胶质的原因主要有两点。第一，为了释放空间。第二，使人类做以上两件事情时达到而更有质量的结果成为可能。数码相机的最大实用化和集多种装置于一身的构造使得现代人掀起购买它的热潮。很长一段时间里许多家庭负担不起一部数码相机。而如今，数码相机繁多的品种和不一的价钱每个家庭都有能力购买一部数码相机。随着数码相机竞争的不断激烈，制造厂家争相推出物美价廉的相机满足顾客的需求。