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通过对数据通讯中差错检测技术和通讯协议的分析，结合单片机技术特点，介绍了一种以单片机为核心部件、具有上网功能的电路系统，并给出其软硬件实现方法，具有较强的实用性和推广价值。
Through the analysis of error detection technology and communication protocol in data communication and the technical characteristics of single chip microcomputer, a circuit system with single chip microcomputer as the core component and internet access function is introduced. The hardware and software implementation method is given, which is of strong practicality Sex and promotion value.