includereg52h>includespan>intrinsh>包含crol移位子函数的头文件defineucharunsignedchardefinduintunsigned
实验源程序：includereg52h>includeintrinsh>unsignedinta,b;unsignedchard;sbitLED1=P1^0;sbitLED2=P1^1;s
includereg52h>includeintrinsh>defineuintunsignedintdefineucharunsignedcharsfrP1ASF=0X9D;P1口选择
includereg52h>includeintrinsh>defineucharunsignedcharvoidlcd_ini();voidascii_change(void);void
includereg52h>defineuintunsignedintdefineucharunsignedcharsbitkey1=P1^0;按键位定义sbitkey2=P1^1;sbi
includereg52h>defineuintunsignedintsbitLED=P1^0;voiddelay(uinta)延时函数，毫秒级别{uinti;while(–a!=0)
includereg52h>defineucharunsignedcharsbitcsda=P3^2;sbitwr=P3^6;sbitdula=P2^6;sbitwela=P2^7;uchard
includereg52h>defineucharunsignedcharsbitsda=P2^0;sbitscl=P2^1;uchara;voiddelay(){;;}voidstart()开
includereg52h>defineuintunsignedintdefineucharunsignedcharsbitbeep=P2^3;beep用于控制蜂鸣器（每按一次键就为0
注意：低版本的keil软件不能编译成功，因为无法处理浮点运算。includereg52h>includeintrinsh>defineuintunsignedintdef
