Abstract: An electronic device includes a backup power supply unit, a first power management unit, a switch, a voltage detection unit, a processor and an electronic module. The first power management unit is coupled to the backup power supply unit and an external power supply unit. The switch is coupled to the first power management unit. The voltage detection unit is coupled to the external power supply unit and the switch. The processor is coupled to the voltage detection unit. The electronic module is coupled to the switch and the processor. When a voltage level of the external power supply unit is lower than a first predetermined level, the voltage detection unit outputs a detection signal. The switch is controlled by the detection signal to open to stop supplying power to the electronic module. The processor is controlled by the detection signal to execute a shutdown process.

Abstract: An electronic device includes a backup power supply unit, a first power management unit, a switch, a voltage detection unit, a processor and an electronic module. The first power management unit is coupled to the backup power supply unit and an external power supply unit. The switch is coupled to the first power management unit. The voltage detection unit is coupled to the external power supply unit and the switch. The processor is coupled to the voltage detection unit. The electronic module is coupled to the switch and the processor. When a voltage level of the external power supply unit is lower than a first predetermined level, the voltage detection unit outputs a detection signal. The switch is controlled by the detection signal to open to stop supplying power to the electronic module. The processor is controlled by the detection signal to execute a shutdown process.

Abstract: An electronic device includes a reflective proximity sensor for emitting light and detecting whether a wavelength of a reflective light is the same as a wavelength of the light emitted by the reflective proximity sensor, an optical sensor for sensing variation of environmental light, and a controller coupled to the reflective proximity sensor and the optical sensor for controlling operations of the electronic device according to a detection result of the reflective proximity sensor and a detection result of the optical sensor. Hence the electronic device can determine whether it is being placed into a handbag or a pocket.

Abstract: A system determines the development status of a mass such as bread dough in a powered mixer by applying a set of expert rules to qualitative variables determined from the elapsed mixing time and instantaneous power flow to the mixer over time. The preferred apparatus includes a monitor for tracking the instantaneous power flow coupled with a computer for determining the variables and applying the rules stored in computer memory.