【摘要】 通过对实时钟DS1302的操作,可以记录流量仪表的掉电时间,估算此段时间的流量,降低计量误差,减少由此引起贸易双方(供方和用户方)的矛盾。更多还原

【Abstract】 The operation on the DS1302 of clock may record the power cut length of the instrument, calculate the corresponding flow, minimize the calculation error and consequently decrease the conflicts between the trade parties (supplier and consumer).更多还原