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class="markdown_views prism-dracula">
经典烧录软件网址STC-ISP软件V6.86R完整版：http://www.stcmcu.com/
;读取外部电平，点亮led灯提示
ORG 0000H
LJMP MAIN
ORG 0100H
MAIN: MOV A,P2
CPL A
MOV P1,A
LJMP MAIN
END
在这里插入代码片