Question

51单片机，如何编写显示数码管00到99，可用电脑键盘（串行口）暂停，继续的程序（用汇编语言）

Answer 1

MOV 31H,#00H MOV 32H,#00H MOV 33H,#01H MOV 34H,#06H MOV 35H,#03H MOV 36H,#02H ACALL D0 JMP $-2D0: MOV R0,#31H MOV R2,#11111110B MOV DPTR,#TABD1: ORL P1,#00111111B MOV A,@R0 MOVC A,@A+DPTR MOV R3,#8D2: RLC A MOV P3.2,C SETB P3.3 CLR P3.3 DJNZ R3,D2 INC R0 MOV A,R2 ANL P1,AD3: MOV R3,#250 DJNZ R3,$ MOV A,R2 RL A MOV R2,A JB ACC.6,D1 RETTAB: DB 3FH,06H,5BH,4FH DB 66H,6DH,7DH,07H DB 7FH,6FH,77H,7CH DB 39H,5EH,79H,71H DB 40H END

追问

好像没用到串行口呀（SBUF..）好吧，还是谢谢你~