Reprogrammable portable information terminal using a card

摘要

In a portable information terminal capable of updating a program using a PC card, the card (200) storing a new program and a utility program for performing an updating operation, is read by a card unit (202). A program storage unit (208) replaces a pre-stored program with the new program stored in the card after a memory (210) temporarily stores the new program and the utility program read by the card unit, and a controller (214) controls the execution of the utility program stored in the memory (210), so that the new program temporarily stored in the memory (210) can be stored in the program storage unit (208). Therefore, a program is correctly updated without the need for any additional special device.