关于指数函数的源代码，用了代码进行拟合，可很好的表示函数，仿真出图形具体直观-About index function of source code, with the code was fitted, can be very good said function, the graphic simulation specific directly

利用单片机stc12c5a08s2测量正弦交流信号的瞬时值和有效值，并拟合曲线(The instantaneous value and effective value of sinusoidal AC signal are measured by single chip microcomputer stc12c5a08s2, and the curve is fitted)

使用单片机stc12c5a08s2设计预处理电路测量电池电压，并拟合曲线(Using the single chip microcomputer stc12c5a08s2 to design the pretreatment circuit to measure the battery voltage and fit the curve.)