如果你有大量文稿需要存入电脑,如果你有很多照片需要放在你的网站上或者发送给亲朋好友,这都需要扫描仪的帮助。扫描仪是一种重要的计算机外部设备,我们可以用它将照片、文档扫描到计算机中保存和处理。扫描仪的种类扫描仪按扫描方式可分为滚筒式扫描仪、平板式扫描仪和手持式扫描仪。滚筒式扫描仪一般是专业人员用于大幅面扫描领域,扫描质量极佳,但价格昂贵:平板式扫描仪目前最为流行,近年来价格不断下降,扫描质量不断上升,已经成为商业、家庭和个人首选的品种:手持式扫描仪的优点是价格较低、体积小、重量轻,缺点是扫描的精度较低,其扫描质量不如平板式扫描仪,现在已经很少见到。扫描仪常用感光器件 If you have a lot of documents to be saved in your computer, you need the help of a scanner if you have a lot of photos that need to be placed on your website or sent to friends and family. Scanner is an important external computer equipment, we can use it to scan photos and documents to the computer to save and process. Types of Scanners Scanners can be categorized as roller scanners, flatbed scanners and hand-held scanners by scanning method. Roller scanners are generally used by professionals for large format scanning and are excellent in scan quality but expensive: flatbed scanners are the most popular at the moment, with prices declining in recent years, and the quality of the scans rising, becoming commercial, family and personal Preferred varieties: Handheld scanner has the advantage of lower prices, small size, light weight, the disadvantage is the lower accuracy of the scan, the scanning quality is not as good as the flatbed scanner, is now rarely seen. Scanner commonly used photosensitive devices