main.asm

利用不同的按键实现7段数码显示不同的字符

Count		EQU 30H
//SP1			BIT P3.7
			ORG 0
START:		MOV Count,#00H
NEXT:		MOV A,Count
		
			MOV DPTR,#TABLE
			MOVC A,@A+DPTR
			MOV P0,A 
			LCALL DELAY

		/*	MOV DPTR,#TABLE1
		    MOVC A,@A+DPTR
			MOV P3,A   

			LCALL DELAY	 */
			INC Count
			MOV A,Count
			CJNE A,#16,NEXT
			LJMP START
DELAY:		MOV R5,#20			;延时子程序，延时0.2秒
D1:			MOV R6,#100
D2:			MOV R7,#248
			DJNZ R7,$
			DJNZ R6,D2
			DJNZ R5,D1
			RET

TABLE:		DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH,77H,7CH,39H,5EH,79H,71H
TABLE1:     DB 0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H,80H,90H,88H,83H,0C6H,0A1H,86H,8EH
			END