在为音响系统配线的时候，一位年轻的程序员提出，“这么多的电缆和电线！”
While wiring the sound system, a young programmer commented, "I see so many different cables and wires here!"
系统包括上位机软件、RS232—485转换器、分机模块及电缆连接4部分，其监控程序的设计采用顺序查询的方式执行主程序。
The system consists of upper computer software, RS232-485 converter, every kind of modules and cables. And finally the monitor program is designed with the sequential query mode.
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