Systematic architecture, circuit design, and principles of the parallel ports trans-forming circuit capable of driving multiple peripherals are discussed.
从系统结构、电路设计、工作原理几个方面讨论了能够驱动多个外设的并口转换电路的实现。
Then, the whole systematic architecture, some hardwares and firmware program were detailed, finally, the main program and interrupt service program were provided.
洋细论述了系统的总体结构、部分硬件设计和相应固件程序的实现，给出了主程序和中断服务程序流程图。
The unified modeling language (UML) is a visual object-oriented modeling language. It is mainly used for describing software system and constructing software systematic architecture.
统一建模语言(uml)是一种可视化的面向对象的建模语言，可用于对软件系统进行描述和构造软件的系统结构。
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