C51F020单片机编程，实现以下功能：电压采集，按键控制，输出电压、电流的显示-C51F020 microcontroller programming, to achieve the following functions: voltage acquisition, button control, the display of output voltage and current

单片机控制PWM输出实现控制电子负载，并通过I2C跟adc通信完成对电流的采集，从而测出电池组的最大保护电流值-By SCM PWM output for control of electronic load, and the completion of the current collection with adc through I2C communication, thereby measure the current value of the maximum protection of

MLX90393，它能够准确测量沿X，Y和Z轴的磁通密度变化。其应用范围包括从游戏杆、滑动开关、推/拉开关、矫平机（leveler）、直线滑动开关和旋钮等等，到复杂的三维位置传感系统。在处于空闲状态时，该IC仅消耗2.5μA的电流，非常适用于需要微功耗的应用。MLX90393采用一个单片磁像素单元(monolithic magnetic pixel cell)设置，并具有16位分辨率输出。-This document holds the specification of a 3-axis mag