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介绍了PC机并行接口控制器的结构和工作原理,阐述了如何用TURBO PASCAL语言编写并行通信的服务程序。在并行通信中采用延时处理方式是一次成功的尝试。
The structure and working principle of PC parallel interface controller are introduced, and the service program of parallel communication is written in TURBO PASCAL language. The use of delay processing in parallel communication is a successful attempt.