The scanned document is in pdf format, but it can also be in jpg format; the scanned document specifically refers to a document that is scanned into an image format and then saved as a pdf format file, and the pdf format file does not It must be a scanned copy, because other format files such as word and txt can also be converted into pdf format files.
The operating environment of this tutorial: Windows 10 system, DELL G3 computer.
The scanned copy is in pdf format or jpg format.
Scans specifically refer to documents that are scanned into image format and then saved in PDF format. And files in pdf format are not necessarily scanned copies, because files in other formats such as word and txt can also be converted into pdf format files.
PDF is a file format, short for Portable Document Format, which means "portable document format". Usually when scanning with the printer, you can choose to scan into image or PDF format.
PDF files are based on the PostScript language image model, which ensures accurate colors and accurate printing effects no matter what kind of printer is used. That is, PDF will faithfully reproduce every character, color and image of the original. elephant. PDF files are universal regardless of whether they are in Windows, Unix or Apple's Mac OS operating system.
The file format scanned by the scanner is generally a file format with the suffix JPG. The scanning format is the most basic parameter in the video standard, which mainly includes the sampling parameters of the image in time and space, that is, the number of pixels per line, the number of frames per second, and interlaced scanning or progressive scanning. There are two main categories of scanning formats: 525/59.94 and 625/50. The former is the number of lines per frame, and the latter is the number of fields per second.
Scanned copy means an electronic image generated by scanning paper documents with a scanner or camera. The electronic scanned copy is easy to carry. You only need to put it in your mobile phone or USB flash drive and hand it to others directly, avoiding the disadvantages of bulky and difficult-to-carry paper. It is more convenient to save and avoids the trouble of paper being difficult to keep and easy to lose. It is the development direction of various enterprises, administrative institutions and institutions for material storage.
Electronic files are generated and processed by electronic computers, and their information is recorded and expressed in binary digital codes, so they can also be called "digital files." This is the basic difference between electronic files and all other previous forms of files, and it is also what electronic file information has in common with other digital information. Digital information uses a combination of two numbers, 0 and 1, to record information. Each 0 or 1 is called a bit. The information to be recorded is stored in computer memory (including internal memory and various external memories) using a string of bits. , and can be transmitted through communication networks.
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