16按键数字显示程序

正文摘要:

#include <regx51.h> void delayms(unsigned int i) { unsigned char k; while(i--) for(k=0;k<120;k++); } char scan_key (); void main() { unsigned char led[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92 ...