1. scanning the original document means that the paper document is scanned into an electronic document file on the computer by a scanning instrument.
2. Scanned documents are similar to paper documents, and its advantage is that it is convenient to transmit by e-mail.
3. It is also convenient to copy, and it is also convenient to take a USB flash drive and a network disk with you. It can also be printed into paper documents at any time, and it is convenient that the printer belongs to the output device in the computer.