analog-I2C-driver-MPU050

说明：  下面的程序利用友元函数求两点间的距离。请你将有关的程序补充完整，并总结为什么这里要用友元函数来求两点间的距离。(using friend to get the result.)

This second edition cancels and replaces the first edition, ISO/IEC 9899:1990, as amended and corrected by ISO/IEC 9899/COR1:1994, ISO/IEC 9899/AMD1:1995, and ISO/IEC 9899/COR2:1996.

实现stc12c5a60s2单片机电子时钟的时，分，秒等基本功能。(Stc12c5a60s2 achieve single-chip electronic clock hours, minutes, seconds, and other basic functions)

该程序主要用来测量信号的脉冲宽度，具有较好的稳定性和精度。(The program is mainly used for the measurement of pulse width signal,and has good stability and accuracy. )

stm8系列单片机，控制八位数码管按键计数(stm8 series microcontrollers, digital control buttons eight counts)

ALTUM AD14备份下来的AD14封装希望对大家有用 ALTUM AD14备份下来的AD14封装希望对大家有用(ALTUM AD14 AD14 back down the package hope to be usefulALTUM AD14 AD14 back down the package hope to be useful)

通过comm口，读取外部压力或温度传感器的数据，并显示在界面上(Comm port by reading data the external pressure or temperature sensor, and displayed on the screen)

8255输入输出实验程序代码，适用于LAB8000通用微控制器实验系统(8255 input-output experimental procedure code applies LAB8000 general-purpose microcontroller experimental system)

8051单片机驱动ADS7846/ADS7843芯片,触摸屏被按下时,则ADS7846向CPU发中断请求.()

一种简单的心率测量系统设计，能显示并进行上下限报警(A simple heart rate measurement system design, and upper and lower alarm)