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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GtkTreeView is a widget that displays single- or multi-columned lists and trees. It replaces the old Gtk+-1.2 Gtk-CList and GtkCTree widgets. Even though GtkTreeView is slightly harder to master than its predecessors, it is so much more powerful and flexible that most application developers will not want to miss it once they have come to know it.
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Migrating Atlas applications to ASP.NET AJAX sounds like a rather hard and messy task; all applications have to be changed. However, in most cases, not much effort is required for the migration. There are several reasons for this. First, the most important features of Atlas changed only marginally in ASP.NET AJAX. And second, the most convenient features already exist, not in the ASP.NET AJAX package itself but in the Atlas Control Toolkit, which is now called ASP.NET AJAX Control Toolkit.
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