Abstract: This disclosure provides a method and a module for simulating a keyboard used in an electronic device having a hot key. The method for simulating a keyboard at least includes the following steps. First, whether the hot key is pressed is checked. If the hot key is pressed, a pressing time of the hot key is calculated. If the pressing time is over a first predetermined time, a first scanning code is sent. When the pressing time is within the first predetermined time, whether to send a second scanning code is determined according to the pressing time.

Abstract: This invention discloses a stacked electrical connector including a first connector, a second connector, and a conductive casing. The first connector includes a first signal connection portion and a first group of soldering pins extending along a direction. The second connector includes a second signal connection portion and a second group of soldering pins extending along the direction. The first connector is stacked on the second connector. The conductive casing has a first opening, a second opening, and a third opening. The conductive casing covers the first connector and the second connector. The first signal connection portion passes through the first opening, and the second signal connection portion passes through the second opening. The first group of soldering pins and the second group of soldering pins are exposed to the third opening.

Abstract: This invention discloses a stacked electrical connector including a first connector, a second connector, and a conductive casing. The first connector includes a first signal connection portion and a first group of soldering pins extending along a direction. The second connector includes a second signal connection portion and a second group of soldering pins extending along the direction. The first connector is stacked on the second connector. The conductive casing has a first opening, a second opening, and a third opening. The conductive casing covers the first connector and the second connector. The first signal connection portion passes through the first opening, and the second signal connection portion passes through the second opening. The first group of soldering pins and the second group of soldering pins are exposed to the third opening.

Abstract: A level shifter includes a reference voltage level and a voltage dividing circuit. The voltage dividing circuit is connected to the reference voltage level, a first voltage level, and a second voltage level. The second voltage level is between the reference voltage level and the first voltage level.