delayfunc.h

PS/2接口转矩阵键盘,51单片机编程实现

#ifndef DELAYFUNC
#define DELAYFUNC
//#include "includekey.h"
#include "stdio.h"
#include "intrins.h"
#include "reg52.h"


void delay(unsigned char count);
void dmsec(unsigned int count);
#define delay_10us() _nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_()
#define delay_20us() delay_10us();delay_10us()
#define delay_40us() delay_20us();delay_20us()
#define delay_50us() delay_40us();delay_10us()
#endif