| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic equipment and an extended unit capable of sharply reducing the electric energy consumption of electronic equipment by realizing the efficiency of power supply from the electronic equipment to the extended unit. SOLUTION: When the main power source of host equipment 100 is turned off, and a connector 22 of card-sized electronic equipment 200 is connected to a connector 12 of the host equipment 100, a power supply control part 13 of the host equipment 100 starts only power supply to the card-sized electronic equipment 200. On the other hand, a central control processing part 21 of the card-sized electronic equipment 200 judges that the main power source of the host equipment 100 is turned off when any operation instruction from the host equipment 100 is absent even after the lapse of a fixed time since the start of power supply, and automatically starts radio communication processing using a radio communicating part 23 based on an operation instruction group stored in an information storage part 24. |
