Q.Which of the following is an input device?
(A) Printer
(B) Monitor
(C) Scanner
(D) Plotter

The test is simple — does the device send data INTO the computer, or give results OUT of it?

Section d defines an input device as any hardware that feeds data and instructions into the computer. A scanner does exactly this: it reads a printed document, page, or photograph and converts it into a digital image that the computer can store and process. So option (C) is correct. …

Students sometimes mislabel a scanner as an output device because it deals with printed paper like a printer does. But direction is what matters: a scanner brings …