89C51单片机循环灯实验

ORG 0000H SJMP MAIN ORG 0030H MAIN: MOV P1,#1 JNB P3.3,MAIN MOV P2,#0 SETB P2.2 SETB P2.5 MOV P0,#1 LCALL DELAY MOV P0,#000H MOV A,#0FEH LOOP: MOV P0,A CLR P2.5