这是我们项目小组开发的变电站预警系统的一部分，按键处理与数码显示电路和温度采集器的硬件电路图。其中涉及单片机STC与CAN之间的通信硬件电路的接线。-This is our project team developing the substation part of early warning systems, keys to deal with digital display circuit and temperature used, the hardware circuit. STC involved with CAN microcontroller communications between the hardware circuit wiring.