CHULI:
MOV A,40H ;处理秒数据
ANL A,#0FH
MOV 50H,A
MOV 70H,A
MOV A,40H
ANL A,#11110000B
SWAP A
MOV 51H,A
MOV 71H,A
;---------------------------------------------
MOV A,41H ;处理分数据
ANL A,#0FH
MOV 52H,A
MOV 72H,A
MOV A,41H
ANL A,#11110000B
SWAP A
MOV 53H,A
MOV 73H,A
;---------------------------------------------
MOV A,42H ;处理时数据
ANL A,#0FH
MOV 54H,A
MOV 74H,A
MOV A,42H
ANL A,#11110000B
SWAP A
MOV 55H,A
MOV 75H,A
;----------------------------------------------
MOV A,43H ;处理日数据
ANL A,#0FH
MOV 60H,A
MOV 76H,A
MOV A,43H
ANL A,#11110000B
SWAP A
MOV 61H,A
MOV 77H,A
;---------------------------------------------
MOV A,44H ;处理月数据
ANL A,#0FH
MOV 62H,A
MOV 78H,A
MOV A,44H
ANL A,#11110000B
SWAP A
MOV 63H,A
MOV 79H,A
;---------------------------------------------
MOV A,45H ;处理年数据
ANL A,#0FH
MOV 64H,A
MOV 7AH,A
MOV A,45H
ANL A,#11110000B
SWAP A
MOV 65H,A
MOV 7BH,A
;----------------------------------------------
MOV A,46H ;处理周数据
MOV 66H,A
MOV 7CH,A
RET
;=============================================
;实时时间、日期查表取数子程序
;=============================================
DISP: ;MOV R0,#TIME_DATA
MOV R3,#06H
DISP1: MOV A,@R0
MOV DPTR,#TAB_NU
MOVC A,@A+DPTR
MOV @R0,A
INC R0
DJNZ R3,DISP1
RET
;====================================================
;时间、日期显示子程序
;====================================================
TIME_DISPLAY:
;MOV R0,#TIME_DATA ;取得显示单元首地址
MOV R1,#07FH ;从第一个数码管开始
MOV R2,#08H ;共8个数码管
DISLP: MOV P0,@R0 ;获得当前单元数据
MOV A,R1
MOV P2,A ;数码显示
JB ACC.5,DISLP1 ;第三位数码管显示 －
MOV P0,#0f7H
JMP DISLP3
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本文关键字：数码管 51单片机，单片机-工控设备 - 51单片机
