上位机

• They communicate each other by the rs - 232 or the rs - 485 bus
  上位机与下位机之间通过rs - 232或rs - 485总线进行通讯。
• The information between pc and mcu exchanges through rs232 bus
  上位机和下为机之间的数据交换，通过rs232接口进行。
• This paper researches the pc part of universal data acquisition system
  本文主要研究了通用数据采集系统的上位机控制部分。
• In the last chapter , which is namely chapter seven , some problems of database are depicted
  第七部分描述了上位机设计中的问题。
• It is mainly for the communication to the location machine in order to supervising and management
  它主要是为了实现与上位机的通讯。
• Its upper system can implement real - time monitoring of underwater axis - shifting equipment
  它的上位机系统对水下移轴系统进行实时监控。
• The system has communicated exactly with control computer and runned stably
  该系统已经实现与上位机进行正确的通信，并且运行比较稳定。
• The top control unit is pc , which control the robot through the serial communication
  机器人的上位机是pc机，通过串口与下位机进行通讯。
• The software design contains pc software and microcontroller software two parts
  在软件设计上分为上位机软件设计和下位机软件设计两大部分。
• Three modules are made up of the system , which includes watt - hour meter , handset and pc
  该系统主要由三大模块组成：电能表、手抄器、上位机。