Abstract: A study mode processing means incorporated in a portable information terminal has a input processing means for instructing an LED to emit light in response to the inputting of a code by the user, a light-emitting signal generating means for generating and outputting a light-emitting signal to the LED according to a turn-on or turn-off instruction from the input processing means, a character converting means for converting code information based on a code entered by the user into character information, a character displaying means for displaying a reference character to be studied, a determining means for determining whether character information based on code information entered by the user matches the reference character or not, and a determined result displaying means for displaying a determined result from the determining means on the display unit.