Scanner and method of controlling same

Abstract

A scanner in which image data can be stored in a memory card and output to a computer is so adapted that a user can tell, at a glance, the destination of the output of image data representing the image of an original. The display screen of the scanner is provided with an output-destination display area. The icon of the memory card is displayed in the display area if the memory card has been loaded in the scanner, and the icon of the computer is displayed in the display area if the computer has been connected to the scanner. When the destination of the output of the image data is designated, the display of the designated destination is enclosed by a frame. The display enclosed by the frame is the destination of the output of image data, thus making it possible to ascertain the destination of the image data output at a glance. Further, the number of originals capable of being stored in the memory card can be ascertained. Specifically, the scanner having the freely removable memory card for storing image data senses the remaining storage capacity of the memory card. Before the image of an original is sensed, the size of the original to be sensed and the compression ratio of the image data stored in the memory card are decided.