keiluVision4界面:#includeunsignedcharnum;//共阳极数码管段码unsignedchartab[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,0xff};//行扫描unsignedcharhang[]={0xfe,0xfd,0xfb,0xf7};voidkey(){inti;for(i=0;iproteus仿真界面：