Mercury Computer Systems Delivers Multicomputers to General Dynamics Electric Boat for Submarine Monitoring.

Business Editors/High-Tech Writers

CHELMSFORD, Mass.--(BUSINESS WIRE)--Sept. 9, 2003

Mercury RACE++ Systems Used to Monitor

and Measure Submarine Performance

Mercury Computer Systems Inc. (NASDAQ: MRCY) announced today that it has shipped RACE++(R) Series multicomputer systems to General Dynamics Electric Boat for use in the development of its Ship Monitoring program to monitor submarine performance.

"Sensors pick up noise generated by submarines and our systems process the acoustic data that are recorded," said Barry Isenstein, vice president and general manager of Mercury's Defense Electronics Group. "This specialized development project demonstrates the flexibility of our RACE++ systems to support a wide variety of applications that require the real-time transformation of streams of data from sensors into usable formats for analysis."

Orders for these development RACE++ systems were shipped in the third quarter of fiscal 2003. The systems are part of a developmental effort that may result in future orders upon successful completion of the program.

About General Dynamics Electric Boat

With more than a century of experience, Electric Boat has established standards of excellence in the design, construction and lifecycle support of submarines for the U.S. Navy. Primary operations are the shipyard in Groton, CT, and the automated hull-fabrication and outfitting facility in Quonset Point, RI, with a current workforce of 10,200 employees. Additional information about Electric Boat is available at www.gdeb.com.

About Mercury Computer Systems, Inc.

Mercury Computer Systems, Inc. (NASDAQ: MRCY) is the leading supplier of high-performance embedded, real-time digital signal and image processing computer systems. Mercury's products play a critical role in a wide range of applications, transforming sensor data to information for analysis and interpretation. In military reconnaissance and surveillance platforms the company's systems process real-time radar, sonar, and signals intelligence data. Mercury's systems are also used in state-of-the-art medical diagnostic imaging devices including MRI, PET, and digital X-ray, and in semiconductor imaging applications including photomask generation and wafer inspection.

Based in Chelmsford, Massachusetts, Mercury serves customers in North America, Europe and Asia through its direct sales force and a network of subsidiaries and distributors.

Forward Looking Statement

This press release contains certain forward-looking statements, as that term is defined in the Private Securities Litigation Reform Act of 1995, including those relating to the success of the submarine monitoring program and the anticipated revenues to the Company. You can identify these statements by our use of the words "may," "will," "could," "plans," "expects," "anticipates," "continue," "estimate," "project," "intend," and similar expressions. These forward-looking statements involve risks and uncertainties that could cause actual results to differ materially from those projected or anticipated. Such risks and uncertainties include, but are not limited to, general economic and business conditions, effects of continued geo-political unrest and regional conflicts, continued funding of defense programs and the timing of such funding, competition, changes in technology, delays in completing various engineering and manufacturing programs, changes in customer order patterns, production delays and various other factors beyond the Company's control. These risks and uncertainties also include such additional risk factors as are discussed in the Company's recent filings with the U.S. Securities and Exchange Commission, including its Quarterly Report on Form 10-Q for the quarter ended March 31, 2003. The Company cautions readers not to place undue reliance upon any such forward-looking statements, which speak only as of the date made. The Company undertakes no obligation to update any forward-looking statement to reflect events or circumstances after the date on which such statement is made.

Visit Mercury on the Web: www.mc.com

RACE++ is a registered trademark of Mercury Computer Systems, Inc. Product and company names mentioned may be trademarks and/or registered trademarks of their respective holders.