以实时操作系统为平台进行嵌入式接入网接口协议开发是非常有前景的领域，具有深远的理论研究和实践应用价值。
Embedded access network interface protocol development based on Real Time Operation System is a promising area and has far-reaching theory research and practical application value.
文章介绍了DS12887的内部结构和应用方法，以及由其构成的实时定时硬件电路和接口软件编制方法。
This paper introduces the inside construction and applied method of DS12887, furthermore describes the hardware circuit for real-time timing and programmable method for interface software.
串行接口由于其具有连接简单、使用方便、数据传递可靠等优点，在工业实时控制系统中得到了广泛应用。
The serial interface possesses the good qualities of connecting simply, using conveniently and data transferring credibly, so it has gained abroad appliance in real time control system.
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