Abstract: A double-triggered logic circuit is a composite circuitry consisting of a plurality of PMOS, NMOS, inverters and a signal line. It includes an AND logic circuit and a XNOR logic circuit to generate an adjustable pulse mode to solve the problem of threshold voltage loss.

Abstract: An electronic device includes a main body and a cover. The main body includes a front surface with a display disposed thereon, a rear surface, a bottom surface, a top surface, and two opposite lateral surfaces. Each lateral surface defines a sliding slot extending substantially from the center of the lateral surface towards the bottom surface. The cover includes a cover portion and two connecting portions. The two connecting portions are located at two ends of the cover portion spatially corresponding to the sliding slots. The connecting portion includes a supporting portion and a latching portion. The supporting portion protrudes substantially perpendicularly from the cover portion. The latching portion extends into the sliding slot from the free end of the supporting portion and slidably latches with the sliding slot.