Object linking and embedding, OLE

In 1992, a revision of Windows 3, known as Windows 3.1, provided for better graphical display capability and multimedia support. It also improved the Windows error-protection system and let applications work together more easily through the use of object linking and embedding (OLE). 

Data can be embedded with their original application using ActiveX, Object Linking and Embedding (OLE), or Dynamic Data Exchange technologies. 

Object Linking and Embedding (OLE) is Microsoft technology used to embed an application into another, thus preserving the native data used to create them as well as information about the format. 

What is OPC This is another tool for system integration. OPC is open connectivity in industrial automation for interoperability supported by the creation and maintenance of open standards and specifications. OPC is a standardized interface for accessing process data. Object linking and embedding (OLE), component object model (COM)/distributed component object model (DCOM), was developed by Microsoft. When this is applied to the process control, OPC (OLE for process control) is developed. OPC is based on the Microsoft COM/DCOM standard and has been expanded according to the manufacturer s requirements. 

The PC explosion of the 1980s and 1990s has also impacted modem DCSs with the advent of PC-based control systems [5,6] which feature object linking and embedding (OLE) software for process control (OPC) [7]. 

On a larger scale, self-contained application programs can be driven by each other object linking and embedding/Component Object Model (OLE/COM), UNIX pipes and signals, and Apple events allow this to happen. Communicating components can be written in different languages, and each can execute in its own space. 

---