单片机 用51单片机显示一个数码管轮流显示9到0再从0到9每隔一秒出现一 ...答:MOV DPTR,#TAB MOV P0,#0FFH LOP:LOOP0:MOV 20H,#9 MOV R0,#10 LOOP1:MOV A,20H; 9-0 MOVC A,@A+DPTR MOV P0,A DEC 20H CALL DELL;YANSHI DJNZ R0,LOOP1 MOV 20H,#0;0-9 MOV R0,#10 LOOP2:MOV A,20H; 0-9 MOVC A,@A+DPTR MOV P0,A INC 20H CALL DELL;YANSHI DJNZ...
51单片机控制数码管循环显示0-9程序答:采用共阴极LED数码管,51单片机P1口输出数据:ORG 0000H JMP MAIN ORG 0100H MAIN:MOV DPTR,#TAB MOV R1,#00H DISP:MOV A,R1 MOVC A,@A+DPTR MOV P1,A LCALL DELAY INC R1 CJNE R1,#0AH,DISP SJMP TAB: DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FHDELAY: MOV R4,#...