1.Input device which transfers information and images from physical documents to computer files.

Scanner.

Explanation:

Scanner refers to an input device which transfers information and images from physical documents to computer files. It is simply an electronic device that is used to digitally scan or copy data (informations) from a hardcopy document such as photographs, paper files, printed texts etc and then converted to a digital computer file in formats such as png, or jpeg. The scanner is a device which avail users the ability and opportunity to view, edit and transfer hardcopy document on a computer system in soft-copy.

Majority of the scanners used around the world are flatbed scanners and as such have a flat glass surface for scanning documents. Basically, all scanners are to be used with a device driver software pre-installed on the computer before the configuration of the scanner.

Other types of scanners are drum scanners, contact image sensor (CIS) scanner, CCD scanner, planetary scanner, 3D scanner, Roller scanner etc.