On 16 July 1999, the company and its products were acquired by a former competitor Cadence Design Systems. MicroSim has been a supplier of PC-based analog and mixed-signal simulation software for designing printed circuit board systems ( PSpice).

In late 1997 and early 1998, OrCAD and MicroSim Corporation merged, a business combination that ultimately proved to be disappointing. In June 1995, OrCAD acquired Massteck Ltd., a small company that offered a printed circuit board layout tool and a sophisticated autoroute, and Intelligent Systems Japan, KK, OrCAD's distributor in Japan. He was succeeded as CEO by Michael Bosworth. In 1991, Durbetaki, then CEO and head of R&D, left the company. Over time, OrCAD's product line broadened to include Windows-based software products to assist electronics designers in developing field-programmable gate arrays (FPGAs), including complex programmable logic devices (CPLDs). The flagship SDT product was soon followed with a digital simulator, VST (Verification and Simulation Tools), and printed circuit board (PCB) layout tools. In 1986, OrCAD hired Peter LoCascio to develop sales, and co-founder Ken Seymour left the company. The company's first product was SDT (Schematic Design Tools) for DOS, which shipped first in late 1985. Durbetaki began creating his schematic capture tool for his use in the PC expansion chassis project but essentially shelved the hardware project entirely in favor of developing low-cost, PC-based CAD software. after five years as an engineer and project manager, decided, along with brothers Keith and Ken Seymour, to start his own company to develop add-on instrumentation for the PC. In 1984 Durbetaki began designing an expansion chassis for the IBM PC. The name OrCAD is a portmanteau, reflecting the company and its software's origins: Oregon + CAD. OrCAD was taken over by Cadence Design Systems in 1999 and was integrated with Cadence Allegro in 2005.įounded in 1985 by John Durbetaki, Ken, and Keith Seymour as 'OrCAD Systems Corporation' in Hillsboro, Oregon, the company became a supplier of desktop electronic design automation (EDA) software. The software is used mainly by electronic design engineers and electronic technicians to create electronic schematics, and perform mixed-signal simulation and electronic prints for manufacturing printed circuit boards (PCBs). OrCAD Systems Corporation was a software company that made OrCAD, a proprietary software tool suite used primarily for electronic design automation (EDA).

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