2397 OrCAD Project File Text (Structured) OrCAD, a proprietary software tool suite used primarily for electronic design automation (EDA). The software is used mainly by electronic design engineers and electronic technicians to create electronic schematics, perform mixed-signal simulation and electronic prints for manufacturing printed circuit boards. OrCAD was taken over by Cadence Design Systems in 1999 and was integrated with Cadence Allegro since 2005. A OrCAD Project File (.OPJ) is a container for the OrCAD design file (.DSN). In addition, a project file also includes simulation profile and layout information. 180 The National Archives and Records Administration / The National Archives and Records Administration 08 Dec 2021 08 Dec 2021 fmt/1572 PUID opj File extension 1913 OrCAD Project File BOF:'(ExpressProject' followed by 0x20 (Space) 1 Absolute from BOF 0 0 284578707265737350726F6A65637420