Abstract: An electronic device includes a host, a display, a sliding plate, and a keyboard. The host has an operating surface. The display is pivoted to the host. The sliding plate is slidably disposed in the host, where the display is mechanically coupled to the sliding plate, and the sliding plate includes a plat portion and a recess portion that are arranged side by side. The keyboard is integrated to the host. The keyboard includes a key structure, where the key structure includes a key cap and a reciprocating element, and the key cap is exposed from the operating surface of the host. The reciprocating element is disposed between the key cap and the sliding plate and has a first end connected to the key cap and a second end contacting the sliding plate. The second end is located on a sliding path of the plat portion and the recess portion.

Abstract: An active heat-dissipation system for a base station of a communication system includes a measuring module, configured to detect a temperature sensing signal of the base station; a controller, configured to receive the temperature sensing signal detected by the measuring module to set a preset temperature signal, to generate a difference between the temperature sensing signal and the preset temperature signal and a time derivative of the difference, and to output a control signal according to the difference and the time derivative of the difference based on a control program; and a power module, configured to receive the control signal and output an electrical signal to a heat-dissipation module according to the control signal, such that the heat-dissipation module performs a heat-dissipation process for the base station according to the electrical signal.