Synopsys, Inc. (NASDAQ: SNPS), a world leader in semiconductor design software, today announced it would report results for its fourth quarter and fiscal year 2005 on Wednesday, Nov. 30, 2005 after the market closes.

A conference call to review the results will begin at 2 p.m. PST (5 p.m. EST) and will be hosted by Aart de Geus, chairman and chief executive officer, and Rex Jackson, acting chief financial officer, senior vice president and general counsel.

Financial and other statistical information to be discussed on this conference call will be available on the corporate website at http://www.synopsys.com/corporate/invest/invest.html immediately before the conference call. A live webcast of the conference call will also be available at the corporate web site at http://www.synopsys.com/corporate/invest/invest.html . Participants should access the live call at least 15 minutes prior to the call. A webcast replay of the conference call can be accessed from the corporate website at http://www.synopsys.com/corporate/invest/invest.html . The replay will be available beginning Wednesday, Nov. 30, 2005 at approximately 5:30 p.m. PST through to the time of the announcement of the company's first quarter earnings results in February. In addition, a dial-up replay of the conference call will be available beginning Wednesday, November 30, 2005 at 5:30 p.m. PST and ending on Dec. 14, 2005. The replay telephone number is USA 800-475-6701, International 320-365-3844, Access Code: 801529.

About Synopsys

Synopsys, Inc. is a world leader in electronic design automation (EDA) software for semiconductor design. The company delivers technology-leading semiconductor design and verification platforms and IC manufacturing software products to the global electronics market, enabling the development and production of complex systems-on-chips (SoCs). Synopsys also provides intellectual property and design services to simplify the design process and accelerate time-to-market for its customers. Synopsys is headquartered in Mountain View, California and has offices in more than 60 locations throughout North America, Europe, Japan and Asia. Visit Synopsys online at http://www.synopsys.com/ .

NOTE: Synopsys is a registered trademark of Synopsys, Inc. All other trademarks mentioned in this release are the intellectual property of their respective owners.

   Investor Contact:
   Minaxi Patel
   Synopsys, Inc.
   650-584-1901

SOURCE: Synopsys, Inc.

CONTACT: Minaxi Patel of Synopsys, Inc., +1-650-584-1901

Web site: http://www.synopsys.com/