dac0808.asm

protues 仿真 adc0808和dac0808,很好的软件

;Digital to Analog Converter,典型值 00H--0.0V      80H--2.5V     FFH--4.98V
      ORG 0000H
	  LJMP MAIN
	  ORG 0030H

MAIN: MOV P2,#00H
      ACALL DELAY

	  MOV P2,#07FH
      ACALL DELAY

	  MOV P2,#80H
      ACALL DELAY

	  MOV P2,#0FFH
      ACALL DELAY

	  LJMP MAIN

DELAY:  MOV R5,#10H;延时2s
DELAY1: MOV R6,#0FAH
DELAY2: MOV R7,#0FAH
DELAY3: DJNZ R7,DELAY3
        DJNZ R6,DELAY2
        DJNZ R5,DELAY1
        RET

		END