According to usage request of controlled objects in high frequency box, adopt AT89C52 for the core electric circuit, designed multiplex voltage output controller.
根据高频机箱中受控对象的使用要求，采用AT 89 C 52为核心电路，设计了多路电压量输出控制器。
2
Hardware interface includes A/D, D/A converters, programmable gain controller and multiplex sampling valve controller. software includes on-line process analysis and normal analysis unit.