vb编写的智能报警系统。主要通过pc机的串口通讯。-vb prepared by the Intelligent Alarm System. Pc machine, mainly through the serial port communications.

某市一卡通技术方案-清算中心。 包括引言，系统设计，系统结构，系统功能，系统流程，系统功能详述，系统通讯详述等7个部分。-City card technology solutions- liquidation center. Including the introduction, system design, system structure, function, system processes, system functionality details, system details a

商用车控制系统局域网络（CAN 总线）通讯协议的应用层—诊断部分(Commercial vehicle control system local area network (CAN bus) application layer - diagnosis part of communication protocol)