Abstract: A method for designing PCB pads: using a drill bit of a first size to drill through a PCB from a first side; using a drill bit of a second size to back-drill a second side of the PCB so as to form a pyramid-shaped through hole; setting the connection means of a second layer and third layer of an inner layer of the PCB that comprises the pyramid-shaped through hole to full connection; and disposing a pad of a third size on a first layer of the inner layer, and disposing a pad of a fourth size on the last layer of the inner layer, wherein the fourth size is bigger than the third size, the fourth size is bigger than the second size, the second size is bigger than the first size, and the third size is bigger than the first size.

Abstract: The present disclosure provides a control device of a water heating apparatus, a water heating apparatus and a control method thereof. The control device comprises a storage, a processor and a heater, the storage stores a usage state value of the water heating apparatus during a first period and provides the usage state value to the processor connected thereto, the usage state value includes a mean value of outlet water temperature TH, a mean value of outlet water amount LU and a mean value of inlet water temperature TL, the processor determines an output value in accordance with the usage state value and provides the output value to the heater connected thereto, the output value includes a water amount LX to be heated and a water temperature T to be reached, the heater performs heating during a second period in accordance with the output value from the processor.

Abstract: The present disclosure provides a control device of a water heating apparatus, a water heating apparatus and a control method thereof. The control device comprises a storage, a processor and a heater, the storage stores a usage state value of the water heating apparatus during a first period and provides the usage state value to the processor connected thereto, the usage state value includes a mean value of outlet water temperature TH, a mean value of outlet water amount LU and a mean value of inlet water temperature TL, the processor determines an output value in accordance with the usage state value and provides the output value to the heater connected thereto, the output value includes a water amount LX to be heated and a water temperature T to be reached, the heater performs heating during a second period in accordance with the output value from the processor.

Abstract: A motion-gesture detection equipment includes a display screen, an image-acquiring device and a processor. The image-acquiring device is to acquire in real time motion-gesture information of an exercising person. The processor is to compare in real time the motion-gesture information with standard motion-gesture information, and send a comparison result to the display screen for displaying in real time.