To provide an information processor which improves operability by performing magnified display with a simple operation and is provided with a touch panel on a display screen.

This device consists of a displaying means 11, a position designating means 12 which is placed on the front of the means 11 and reads a position that is touched by a user, a position detecting means 13 which detects a coordinate to the means 11 based on a signal from the means 12, a pressure detecting means 14 which detects the pressure of the means 13 and an expansion displaying means which magnifies the display area of a fixed range including the position based on the detected position. In such cases, when the means 14 detects pressure which is prescribed value which is preliminarily set or more, the area of a fixed range including the position that is touched by a user is controlled to be shown in a magnified way, and in the display area which is shown in a magnified way, the position is read by the means 12.