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. 一位數(shù)碼管自動延時加1循環(huán)顯示0~F。 ORG 0000H JMP MAIN ORG 0100H MAIN: CLR P2.7 ;數(shù)碼管使能位 MOV P0,#0FE SETB P2.7 CLR P2.7 SETB P2.6 MOV DPTR,#TABLE MOV R2,#0 LOOP1: ACALL D100MS INC R2 MOV A,R2 MOVC A,@A+DPTR MOV P0,A CJNE R2,#0FH,LOOP1 SJMP $ D100MS:MOV R5,#100 D1MS: MOV R4, #249 DL: NOP NOP DJNZ R4, DL DJNZ R5,D1MS RET TABLE: DB 3FH,06H,5BH,4FH,66H,6DH,7DH;共陰字碼表 DB 07H,7FH,6FH,77H,7CH,39H,5EH DB 79H,71H,76H,73H,3EH,00H END | 
