單片機實驗之數碼管顯示實驗

圖

 

代碼

	    ORG 00H
START: MOV DPTR ,#TABLE
   S1: MOV A,#00H
		MOVC A,@A+DPTR
		CJNE A,#01H,S2
		LJMP START
   S2:  MOV P0,A
		LCALL DELAY
		INC   DPTR
		LJMP S1
DELAY:  MOV R5,#20
   D2:  MOV R6,#20
   D1:  MOV R7,#248
		DJNZ R7,$
		DJNZ R6,D1
		DJNZ R5,D2
	RET
TABLE:  DB 0c0h,0f9h,0a4h,0b0h,99h,92h,82h,0f8h,80h,90h
		DB 01H
		END