Abstract: In a circuit layout method, a circuit layout diagram of a circuit board is provided, the circuit board including a plurality of pad symbols. Then, after information regarding a direction of the circuit board facing towards a solder oven when the circuit board passes through the solder oven in the future is obtained, an independent trailing pad symbol is added to a position behind the last pad symbol passing through the solder oven on the layout diagram corresponding to the circuit board. Thus, when the layout diagram is performing version update, the independent trailing pad symbol does not participate in the version update.

Abstract: A hemadynamometer is provided. The hemadynamometer includes a bag, an inflation unit, a deflation unit, a piezoelectric device and a processor. The bag is used for wounding on the user's wrist or upper arm. The inflation unit is used for inflating the pressure inside the bag, and the deflation unit is used for deflating the pressure inside the bag. When the blood in the artery of the user oppresses the piezoelectric device, the piezoelectric device outputs a number of pulse piezoelectric signals accordingly. The processor is used for comparing the waveform slope of the pulse piezoelectric signals to determine a systolic blood pressure value and a diastolic blood pressure value.

Abstract: A hemadynamometer is provided. The hemadynamometer includes a bag, an inflation unit, a deflation unit, a piezoelectric device and a processor. The bag is used for wounding on the user's wrist or upper arm. The inflation unit is used for inflating the pressure inside the bag, and the deflation unit is used for deflating the pressure inside the bag. When the blood in the artery of the user oppresses the piezoelectric device, the piezoelectric device outputs a number of pulse piezoelectric signals accordingly. The processor is used for comparing the waveform slope of the pulse piezoelectric signals to determine a systolic blood pressure value and a diastolic blood pressure value.