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随着计算机的普及，计算机图像技术的广泛应用，以及in－ternet网在中国以更快的速度发展，扫描仪这个集光、电一体化作为计算机的输入设备之一，已日渐成熟，技术发展迅速。在图像处理、图文排版、电子邮件、图文档案管理、广告制诈、汉字识别输入等诸多领域得到越来越广泛的
With the popularization of computer, the widespread application of computer image technology and the development of in-ternet in China, the integration of light and electricity as one of the input devices of computer has become increasingly mature and technology development rapid. In the image processing, graphic layout, e-mail, graphic file management, advertising fraud, Chinese character recognition input and other fields are more and more widely