OrCAD PSpice was integrated with MicroSim in 1998, combining PSpice into the original OrCAD system. This integration included OrCAD Capture for circuit diagram input, OrCAD Layout for printed circuit board (PCB) layout, and "Programmable Logic" as part of a comprehensive set of computer-aided circuit analysis software known as OrCAD Express. The merger allowed users to have a more streamlined workflow from schematic design to PCB layout.
In 2000, Cadence Design Systems, Inc. acquired OrCAD and released OrCAD 9.21. By 2003, OrCAD 10.0 was launched. In 2005, it was further developed by Yihua Computer, integrating the PCB design software Allegro 15.5, which caused the version number to jump directly to 15.5. In 2009, OrCAD introduced an enhanced version, OrCAD 16.3, offering improved features and functionality. Today, it is marketed by Yihua Computer as an entry-level tool for computer-aided circuit analysis.
**What role does IREF play in ORCAD?**
IREF in ORCAD is used to trace signal lines on the schematic. It helps engineers quickly identify and navigate through the connections within the circuit design, making it easier to understand and modify the layout.
**How to add IREF to ORCAD?**
Here’s a step-by-step guide on how to add IREF to your OrCAD project:
1) Open the completed OrCAD schematic and click on the Project Manager button. Then, select the *.dsn file again to ensure the project is properly loaded.
2) Click on the "Annotate" option from the Tools menu. This will allow you to annotate the schematic and add reference designators.
After annotating, you can proceed to add IREFs to specific components or nets to enhance the clarity of your design.
By using IREF effectively, you can significantly improve the readability and manageability of complex circuit designs. Whether you're working on a simple prototype or a large-scale PCB, IREF is a powerful tool that supports efficient design and debugging processes.
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