The EPICS toolkit consists of a set of software components with which Application Developers can create a control system. The basic component types are:
•OPI
Operator Interface. A UNIX- or NT-based workstation or PC which can run various EPICS tools—the “clients.”
•IOC
Input Output Controller. A VME/VXI-based chassis containing a Motorola 68K or PPC processor with various VME I/O modules for analog and digital signals, and for access to field buses such as Allen-Bradley, GPIB, CANbus or CAMAC.
•LAN
TCP/IP-based Local Area Network. A communication network which connects the IOCs and OPIs. EPICS provides a software com- ponent, Channel Access, which provides network transparent commu- nication between every client—such as OPI—and an arbitrary number of servers—such as IOC.
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Microsoft’s Visual Studio 2008 introduces a whole new set of .NET technologies that will revolutionize, once again, the way you develop smart client and web-based applications; the most notable being LINQ, WPF and, of course, Silverlight. For most of us working in and around web application development in the business world, Silverlight is a big step forward; especially if you consider that it provides clean coding practices with extensible languages (e.g. XAML and C#). It also provides some of Visual Studio’s rich programming model that we have become accustomed to and can no longer live without; such as class libraries, debugging capabilities and IntelliSense among many others.
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Google Chrome is out, brand new and shiny, and with its launch a new set of standards for all web browsers is implemented for both end users and developers. At this moment the Internet is flooded with details and info on Google’s newest and hottest application designed to link the user to the pool of information on the web. Unlike successful browsers such as Mozilla Firefox, Opera and even Internet Explorer, Google’s approach in building Chrome differs in that the app is built from scratch without giving in to formalities (that is why, at first use, most users will waste time looking for the menu bar). The program seems as if all the features were added as soon as the tester needed them. None of its features are unnecessary or redundant in terms of access.
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It’s been called the essence of Web 2.0. It’s the ability to combine pieces of different web sites to create something new, something meaningful. Something for you and the people who have your tastes. Your social network. Not some mass market portal built by corporate programmers who think that they know you and your personal tastes.
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Mashups
It’s been called the essence of Web 2.0. It’s the ability to combine pieces of different web sites to create something new, something meaningful. Something for you and the people who have your tastes. Your social network. Not some mass market portal built by corporate programmers who think that they know you and your personal tastes.
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The basic elements for an application using the AJAX technologies, JavaScript and the XMLHttpRequest object, are not difficult to understand and there are many articles on the web that show how to use this object and declare that being AJAX. I think there are a lot more topics that should be understood and talked about.
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XML is a text based programming language. Therefore, the code can be written in a standard text editor. There are applications available specifically written for XML, but I have always used an enhanced shareware version of Notepad. If code is saved with a txt extension, rename with an xml extension. XML gauges usually consist of the xml file and bmp (bitmap) files, although gauges without bitmaps are quite common.
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Cisco CVP VoiceXML software has been designed to be easy to use but highly extendable. While the software provides enough to produce high quality voice applications out of the box, many users will want to extend the functionality of the software by building custom components that perform very specific tasks. This document describes the processes and application programming interfaces (APIs) provided for a developer to construct and deploy these components.
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