独立按键实现数码管0到9递增

#include <STC15F2K60S2.h>
#define uint unsigned int
#define uchar unsigned char
#define ulong unsigned long
uchar code seg[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
sbit key1=P0^0;
#define LED1 P1
uint n;
void delayms(uint ms){
    uint i,j;
    for(i=ms;i>0;i--)
        for(j=110;j>0;j--);
}
void main(){
    P1M0=0XFF;
    P1M1=0X00;
    n=0;
    
    while(1){
         LED1=seg[n];
        if(key1==0){
        delayms(50);
            while(!key1);
                n++;}
            if(n>9)
                n=0;    
    }

}