霍尔传感器测速

霍尔传感器测速，lcd显示#include//单片机内部专用寄存器定义 #defineucharunsignedchar #defineuintunsignedint//数据类型的宏定义 ucharcodeLK[10]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xF8,0x80,0x90,};//数码管0~9的字型码 ucharLK1[4]={0xfe,0xfd,0xfb,0xf7};//位选码 uintdataz,counter;//定义无符号整型全局变量