#include <REGX52.H> unsigned char Nixietable[]=

#includeunsigned char Nixietable[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F}; void Delay(unsigned char xms) { unsigned char i, j; while(xms--) { i = 2; j = 199; do { while (--j); } while (--i); } } void Nixie(unsigned char Location,Number) { switch(Location) { case 1:P2_4=1;P2_3=1;P2_2=1;break; case 2:P2_4=1;P2_3=1;P2_2=0;break; case 3:P2_4=1;P2_3=0;P2_2=1;break; case 4:P2_4=1;P2_3=0;P2_2=0;break; case 5:P2_4=0;P2_3=1;P2_2=1;break; case 6:P2_4=0;P2_3=1;P2_2=0;break; case 7:P2_4=0;P2_3=0;P2_2=1;break; case 8:P2_4=0;P2_3=0;P2_2=0;break; } P0=Nixietable[Number]; Delay(1); } void main() { unsigned char number=0,num; while(1) { if(P3_1=0) { Delay(20); while(P3_1==0); Delay(20); number++; if(number>=10) number=0; num=number; } Nixie(1,num); } } 这是51的码想用K1控制1号位数值从0到9的增加，但不知道为什么K1按下之后没有反应求解