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基于COM 的OPC 历史数据存取规范1.2 的接口编排
OPC 历史数据存取规范基于COM，要将其移植到.NET 平台，需要解决编排过程中数据类型转换、接口实现、参数传递等问题。研究C#接口属性类、.NET 托管和非托管的转换后，解决了OPC 历史...
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This tutorial will deal with getting input using Direct Input. All you will need to run and/or com
This tutorial will deal with getting input using Direct Input. All you will need to run and/or compile this tutorial i...
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This serial client in JAVA allows sending, reading and writing of SMS via a serial COM port. The too
This serial client in JAVA allows sending, reading and writing of SMS via a serial COM port. The tool uses the PDU SMS f...