Abstract: A detachable key has a character generator, a control signal generator, a wireless module, and a connection part. The control signal generator generates a control signal when a user presses or touches the control signal generator. The character generator generates a character signal according to the control signal. The wireless module receives the character signal and transmits the character signal to a computing device via a wireless transmission manner. The connection part is used to connect the detachable key with the other detachable keys. The user may freely connect detachable keys to form the demanded keyboard according to the user's requirements, and thus the detachable key is convenient to the user.

Abstract: A portable electronic device capable of adjusting prompting time includes a processing unit including a time unit and a time setting unit, a positioning unit, an input unit, and a network unit. The positioning unit is provided for positioning position of the portable electronic device. The input unit is provided for inputting a schedule information including a predetermined prompting time and a position of destination. The network unit is connected with a network server through Internet for downloading transportation and/or weather information and transmitting the same to the processing unit so as to adjust, in response thereto, the predetermined prompting time. A method for operating the portable electronic device capable of adjusting prompting time is also disclosed.

Abstract: A display casing includes a front casing, a rear casing and adjusting portions, wherein the front casing is engaged with the rear casing, the rear casing has first positioning portions disposed on its internal side, and each adjusting portion has a support stand coupled to the corresponding first positioning portion and an elastic plate fixed onto a lateral side of the support stand. When the adjusting portions are connected to the corresponding first positioning portions, the elastic plates form an enclosed accommodating area for accommodating and positioning a LCD panel module, and a hole disposed at the center of the front casing is provided for aligning a display surface of the LCD panel module, such that manufacturers can adjust positions of the adjusting portions to change the size of the accommodating area for accommodating LCD panel modules of different sizes.