| 摘要 |
There is provided a recording apparatus for receiving recording data from an electronic apparatus or a host computer activated by being supplied with a power source through an interface, and performing a recording operation on a recording medium by the use of a recording head. This recording apparatus comprises power source supplying means for supplying predetermined electric power to the electronic apparatus, detecting means for detecting that the electronic apparatus has been connected, and control mans for changing over the control of the recording operation when the detecting means has detected the connection or non-connection of the electronic apparatus. Also, there is provided an electronic apparatus for effecting communication with a first external device activated by being supplied with a power source through a first interface and a second external device connected thereto through a second interface, and performing an operation. This electronic apparatus comprises power source supplying means for supplying predetermined electric power to the first external device, detecting means for detecting that the first external device has been connected, and control means for changing over the control of the operation when the detecting means has detected the connection or non-connection of the first external device.
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