A scanner serves as an input device only.
an input device
A copier is neither an input device nor an output device because it need not be connected to a computer and usually is not. A Printer, which may also be used as a copier, is an output peripheral device. A Scanner, which feeds data to a computer, is an input peripheral device. Modern digital copiers use scanners as their "front ends". The scanner is then an input device to a copier.
It scans and input data into a PC. (Input device)
The Keyboard is an Input Device. It is used to enter text and utilise commands. It is a peripheral.
Input, output and storage.
peripheral
A scanner is the computer peripheral used as an input in an office. Input devices are things you attach to a computer.
Input Device
input device..
Scanners can only be used as an input device. They scan the image placed inside/ontop and digitalise it and display it on your computer screen. The only type of scanner that can output is an "all-in-one" scanner/printer that can print out the images you scan in or other images from your PC, but that is not technically a scanner, it is a scanner, printer combination. So no, Scanners can only be used as input devices.
any data transfer one place to another palace easily with the help of peripheral device. its most important for our computer. its a hardware like pendrive input output device, scanner etc.