哈尔滨理工大学--单片机课程设计-程序+电路(19)

} else { switch(pos_sec) { case 1: number3 = 18; number4 = 18; break; case 2: number5 = 18; break; case 3: number7 = 18; number8 = 18; break; } } break; }

void main()

uchar a,A1,A2,A2t,A3; while(1) {

wela=1;

P0=0; adwr=0; _nop_(); adwr=1;

P0=0xff; delay(10);

wela=0; for(a=20;a>0;a--)

{ display(A1,A2,A3); }

wela=1; P1=0xff; P0=0; adrd=0; adval=P1;