| 摘要 |
PROBLEM TO BE SOLVED: To provide a device and a method for rewriting program capable of reducing the storage capacity of RAM and ROM. SOLUTION: This device includes a first ROM 7 of storing a firmware for activation having an activation program of activating a microcomputer system 1 and a communication program of conducting communication with a host computer 2, a RAM 5 of temporarily storing data down loaded from the host computer 2, and a second ROM 8 of storing a firmware for control of controlling the operation of an electronic appliance. A deletion/writing program for deleting and writing the firmware for control stored in the second ROM 8 and the firmware for control are transmitted from the host computer 2.
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