exp_12_1.c.svn-base

单片机硬件实验代码

 #include "reg51.h"
 
 int data a _at_ 0x30;
 int data b _at_ 0x40;
 int data c _at_ 0x50;
 
 void main()
 {
 	char sign;
 	sign = '*';
 	a = 12;
 	b = 4;
 	switch(sign)
 	{
 		case '+':
 		  c = a + b; break;
 		case '-':
 		  c = a - b; break;
 		case '*':
 		  c = a * b; break;
 		case '/': 
 		  c = a / b; break;		      
 	}
}