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1¡¢ ÓÃ8оÅÅÏß½«8279ÇøDU(a-h)Á¬½Óµ½ÊýÂë¹ÜÏÔʾÇøµÄ DU(a-h)£¬8279Çø

BIT(BIT0-BIT7)Á¬½Óµ½ÊýÂë¹ÜÏÔʾÇøµÄBIT(BIT0-BIT7)¡£ 2¡¢ÓÃ4оÅÅÏß½«8279ÇøµÄKH(H1-H7)Á¬µ½¼üÅÌÇøµÄKH(H1-H4)ÉÏ£¬KL (L4-L1)

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ORG 0000H AJMP MAIN ORG 0030H MAIN: MOV SP,#60H MOV 6FH,#70H

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¿ª ʼ 8279³õʼ»¯ ÏÔʾÆ÷ÏÔʾ8279£­1 N Óмü°´ÏÂÂ𣿠Y ¼ÆËã¼üÖµ ²é×ÖÐÍ´úÂë ËÍÏÔʾ»º³åÇø ÏÔ Ê¾ ͼ£¨7£­2£© MOV 70H,#8H ; ;70H-77HΪÏÔʾ»º³åÇø ÏÔʾ\ MOV 71H,#02H ; MOV 72H,#7H ; MOV 73H,#9H ;

MOV 74H,#12H ;

MOV 75H,#12H ; MOV 76H,#12H ;

MOV 77H,#01H ;

LOOP: LCALL DISP ;µ÷ÏÔʾ MOV R2,#5H ;ÑÓʱ²ÎÊý LCALL DELAY ; È¡¼üÖµ

LCALL GETKEY LCALL DISP

MOV R2,#5H LCALL DELAY SJMP LOOP

DISP: ;ÏÔʾ×Ó³ÌÐò,»º³åÇøΪ70H-77H C8279 EQU 0E001H ; D8279 EQU 0E000H ;

MOV DPTR,#C8279 MOV A,#0H

MOVX @DPTR,A ; д8279·½Ê½×Ö MOV A,#2aH

MOVX @DPTR,A ;д·ÖƵϵÊý MOV A,#0D0H

MOVX @DPTR,A ;ÇåÏÔʾ

MOV A,#90H

MOVX @DPTR,A ;ÉèÖôÓ×ó±ß¿ªÊ¼Ð´ÈëÊý¾Ý DISP1: MOVX A,@DPTR

JB ACC.7,DISP1 ;¶Á8279¹¤×÷ÊÇ·ñÕý³£ MOV R0,#70H ;ÏÔʾ»º³åÊ×Ö· MOV R1,#08H DISP2: MOV A,@R0

MOV DPTR,#TAB

MOVC A,@A+DPTR ;²é×ÖÐÍ

MOV DPTR,#D8279 cpl a

MOVX @DPTR,A ;ËÍ×ÖÐ͵½8279ÏÔʾ

13

INC R0 DJNZ R1,DISP2 RET ;×ÖÐÍ´úÂë

TAB: DB 0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H ;0,1,2,3,4,5,6,7 DB 80H,90H,88H,83H,0C6H,0A1H,86H,08EH ;8,9,A,B,C,D,E,F DB 08CH,0C1H,0BFH,91H,89H,0C7H,0FFH,07FH P(10),U(11),-(12),Y(13),H(14),L(15),¹Ø(16) ,.(17)

CLEAR8279:MOV DPTR,#C8279 ;ÇåÏÔʾ ×Ó³ÌÐò MOV A,#0D0H MOVX @DPTR,A RET

GETKEY: MOV DPTR,#C8279 MOVX A,@DPTR ANL A,#07H

CJNE A,#0H,GET1 JMP GETKEY GET1: MOV DPTR,#D8279 MOVX A,@DPTR MOV B,A

MOV R2,#00H

MOV DPTR,#KEYDATA KEY1: MOV A,#00H MOVC A,@A+DPTR CJNE A,B,KEY2 JMP KEY3 KEY2: INC DPTR INC R2 JMP KEY1

KEY3: MOV A,6FH MOV R1,A MOV A,R2 MOV @R1,A INC 6FH

CJNE R1,#78h,KEY4 MOV 6FH,#70H KEY4: RET

KEYDATA: DB 23H,2BH,33H,3BH , 22H,2AH,32H,3AH DB 21H,29H,31H,39H,20H,28H,30H,38H

;

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DELAY: PUSH 02H ;ÑÓʱ×Ó³ÌÐò DELAY1: PUSH 02H DELAY2: PUSH 02H

DELAY3: DJNZ R2,DELAY3 POP 02H

DJNZ R2,DELAY2 POP 02H

DJNZ R2,DELAY1 POP 02H DJNZ R2,DELAY

RET END

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