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...
AT89C51单片机怎么用汇编语言让4个数码管同时显示abcd答:MOV 33H,#0cH MOV 34H,#0dH ACALL D0 JMP $-2 D0: MOV R0,#31H MOV R2,#11111110B MOV DPTR,#TAB D1: MOV R3, #250 DJNZ R3,ORL P3,#00001111B MOV A,@R0 MOVC A,@A+DPTR MOV P1, A D2: MOV A, R2 MOV P3, A ...
51单片机中用两位数码管现实显示控制,用汇编语言编程序段答:MOV 32H,#00H MOV 33H,#01H MOV 34H,#06H MOV 35H,#03H MOV 36H,#02H ACALL D0 JMP $-2 D0: MOV R0,#31H MOV R2,#11111110B MOV DPTR,#TAB D1: ORL P1,#00111111B MOV A,@R0 MOVC A,@A+DPTR MOV R3,#8 D2: RLC A MOV...