按下独立按键k1数码管左移，按下独立按键k2数码管数值加1。
typedef unsigned char u8;u8 code smgwei[]={0x00,0x04,0x08,0x0c,0x10,0x14,0x18,0x1c};u8 code smgduan[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};sbit key1=P3^1;sbit key2=P3^0;u8 wei,shu;void delay(u16 i){while(i--);}void button(){if(key1==0){delay(1000);if(key1==0){wei++;if(wei>=8){wei=0;}while(!key1);}}if(key2==0){delay(1000);if(key2==0){shu++;if(shu>=10){shu=0;}while(!key2);}}}void main(){while(1){button();P0=smgduan[shu];P2=smgwei[wei];}}
