Abstract: A portable electronic device adapted for connecting to a base is provided. The base has a first connector and an RFID tag. The portable electronic device includes a casing, a second connector, a cover, a control module and an RFID sensor. The second connector is disposed on a lateral surface of the casing and is adapted for connecting to the first connector. The cover is movably disposed on the lateral surface of the casing and corresponds to the second connector, so as to cover or expose the second connector. The RFID sensor is disposed in the casing and is adjacent to the lateral surface. The RFID sensor detects the RFID tag to generate a signal. The control module is disposed in the casing and coupled to the RFID sensor and the cover. The control module controls the cover to move to expose the second connector according to the signal.

Abstract: A sewing apparatus includes a sewing machine, an electronic paper and a processor. The processor is disposed in the sewing machine, is electrically connected to the electronic paper and the sewing machine, and stores one set of program codes. The processor controls the sewing machine to perform a sewing procedure upon executing the set of program codes when the sewing machine is in an activated state, and controls the electronic paper to display default content related to an operation manual of the sewing machine when the sewing machine is in an inactivated state.