单片机矩阵键盘程序

正文摘要:

#include<reg51.h> #define KEYPORT P2 #define uchar unsigned char sbit line0=KEYPORT^0; sbit line1=KEYPORT^1; sbit line2=KEYPORT^2; sbit line3=KEYPORT^3; led[]={0xfe,0xfd,0xfb,0xf7,0xe ...