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RS232\u7684\u6ce2\u7279\u7387\u662f\u6307\u53cc\u5411\u6570\u636e\u4f20\u8f93\u7684\u901f\u7387\uff0c\u5b83\u53ef\u4ee5\u572850bps\uff08\u6bd4\u7279\u6bcf\u79d2\uff09\u5230115200bps\u4e4b\u95f4\u8c03\u8282\u3002\u6ce2\u7279\u7387\u8d8a\u9ad8\uff0c\u4f20\u8f93\u7684\u6570\u636e\u8d8a\u591a\uff1b\u4f46\u662f\uff0c\u6ce2\u7279\u7387\u8d8a\u9ad8\uff0c\u5bb9\u6613\u53d7\u5230\u7535\u78c1\u5e72\u6270\uff0c\u4ece\u800c\u5f71\u54cd\u6570\u636e\u4f20\u8f93\u7684\u51c6\u786e\u6027\u3002<\/p>\n
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RS232\u6807\u51c6\u5b9a\u4e49\u4e86\u53cc\u5411\u6570\u636e\u4f20\u8f93\u7684\u63a5\u53e3\u7535\u538b\uff0c\u5b83\u7684\u6b63\u8d1f\u7535\u538b\u5206\u522b\u4e3a+3V\u548c-3V\uff0c\u7535\u538b\u7684\u53d8\u5316\u8868\u793a\u6570\u636e\u76840\u548c1\u3002\u6b63\u8d1f\u7535\u538b\u7684\u53d8\u5316\u53ef\u4ee5\u6709\u6548\u5730\u9632\u6b62\u7535\u78c1\u5e72\u6270\uff0c\u4ece\u800c\u4fdd\u8bc1\u6570\u636e\u4f20\u8f93\u7684\u51c6\u786e\u6027\u3002<\/p>\n
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