Method for reforming the program of a personal communications device using pc card and apparatus therefor

A method and apparatus according to it to update the program of the portable information terminal apparatus using a PC (pc) card is disclosed in accordance with the present invention. New programs to be updated (the second program) with the application to perform the update (the third program) unit for updating the mobile information terminal program using the stored card is the second, stored in the card inserted from the outside that can be read from or written to the program with a third program card unit; a display unit that displays the information of the third program stored in the card in accordance with a predetermined control signal, an input for selecting the third program, it displayed on the display unit ;, previously stored program (hereinafter, a first program), and the card part 2 storing a program storage written to;, reading a write is free memory sort of storing the second program and a third program temporarily a storage unit;, to store and update the second program replacing the first program stored in said program storage field A power supply for supplying a power source and the current; And controlling the execution of the third program, and controls the display unit to display the third program, and storing the second program to receive commands of the input unit are temporarily stored in the storage unit the program stored in the storage section a controller for controlling to store the unit. Therefore, according to the present invention, as described above, it is possible to accurately update the program without the addition of a separate device.