Total – $3,516.8

About CSC

Founded in 1959,Computer Sciences Corporation is a leadinginformation technology(IT) services company.CSC’s mission is to providecustomers in industry and government withsolutions crafted to meettheir specific challengesand enable them to profitfrom the advanced use of technology.

With approximately79,000 employees, CSCprovides innovative solutions for customersaround the world byapplying leading tech-nologies and CSC’s ownadvanced capabilities.These include systemsdesign and integration; IT and business processoutsourcing; applicationssoftware development;Web and application hosting; and managementconsulting.

Headquartered in El Segundo, California,CSC reported revenue of $13.9 billion for the 12 months endedDecember 31, 2004.

Our third quarter results were on plan and continue our momentum as we head into the fourth quarter.We are pleased with the pace of announced awards over the past two years and with the robust nature ofboth the global commercial and U.S. federal pipelines. The positive aspects of these pipelines provide uswith increased visibility as we move into our next fiscal year.

Van B. HoneycuttChairman and Chief Executive OfficerComputer Sciences Corporation

FINANCIAL HIGHLIGHTS

Commercial67%

U.S. Federal33%

3RD QUARTER FISCAL 2005 REVENUESFROM CONTINUING OPERATIONSBY BUSINESS SEGMENT

(unaudited)

CSC results for its fiscal 2005 third quarter included: revenue from continuing operations of $3.52 billion,up 5.6% over last year’s comparable quarter (approximately 3% in constant currency); discontinued operationsrevenue of $474.9 million, up 62.8%; net income of $157.5 million; net earnings per share (diluted) of 82 cents,including 12 cents from discontinued operations, compared with last year’s 68 cents including a three-cent after-tax special charge; and major new business announcements of $5.3 billion, all from continuing operations.

CSC’s global commercial activities, including primarily Europe and North America, were the driver of revenuegrowth during the quarter. Trailing 12 months ended December 31, 2004, major business announcementstotaled approximately $17.5 billion, with approximately $15 billion coming from continuing operations. Thisaward base served as a positive contribution to the quarter’s performance. Global commercial revenue alsobenefited from favorable currency movements.

Effective February 11, 2005, CSC’s divestiture of DynCorp International and DynMarine units and selectedDynCorp Technical Services contracts allows CSC to increase its focus on those information technology serviceswhich have been core strengths during the company’s long and successful history with the U.S. federal govern-ment. CSC will use the net proceeds from this sale to grow its business and strengthen its balance sheet.

The 14-month federal pipeline of opportunities for continuing operations is nearly $28 billion, comprisedof potential awards across multiple clients from a broad array of federal government departments and agencies.More than $2 billion of this total is scheduled for award during the fiscal fourth quarter, ending April 1, 2005.

In North America, third quarter revenue derived from shorter-term consulting and systems integrationservices again improved moderately year-over-year. Importantly, in Europe, CSC experienced modest growthcompared to last year’s third quarter.

Global commercial revenue was up 11.1% (approximately 6% in constant currency) to $2.37 billion fromthe year-ago quarter. U.S. commercial revenue was $993.8 million, up 10.8%, compared with last year. Europeanrevenue rose 14.6% (approximately 5% in constant currency) to $1.07 billion from last year’s third quarter.Global commercial and European revenue was the beneficiary of meaningful recent IT services engagementsand favorable currency exchange rate movements. CSC’s non-European international revenue was $309.3million, up slightly (down approximately 4% in constant currency), compared with last year.

For the third quarter, revenue from continuing operations derived from CSC’s U.S. federal governmentactivities declined. Revenue was $1.14 billion, down 4.1% from last year. A negative impact continued duringthe third quarter from the previously disclosed completion of the Fort Rucker helicopter-maintenance contract.Revenue from continuing operations generated by CSC’s civil agencies activities was $378.9 million, a declineof 5.5% from last year. CSC’s DoD-related revenue from continuing operations was $732.2 million, down 1.2%,compared with the third quarter a year ago. Other federal revenue from continuing operations, comprisedof state and local government as well as commercial contracts performed by the U.S. federal sector reportingsegment, declined to $32.7 million from last year’s third quarter.

($ in millions)

U.S. Commercial – $993.8

Europe – $1,069.9

Other International – $309.3

U.S. DoD – $732.2

U.S. Civil Agencies – $378.9

Other U.S. Federal – $32.7

Third Quarter Fiscal 2005 (Ended December 31, 2004)

Quarterly Highlights

20%

12%

9%30%

28%

1%

Third Quarter

01/02/04

$ 3,329.5

$ 128.4

$ 0.68

$ in millions,exceptper-share amounts

Revenues From Continuing Operations

Net Income

Diluted EarningsPer Share

12/31/04

$ 3,516.8

$ 157.5

$ 0.82

Nine Months Ended

01/02/04

$ 9,937.7

$ 328.8

$ 1.74

12/31/04

$10,260.8

$ 398.4

$ 2.08

3rdQtr02-05.qxd 2/23/05 12:16 PM Page 1

All statements in this document that do not directly and exclusively relate to historical factsconstitute “forward-looking statements” within the meaning of the Private Securities LitigationReform Act of 1995. These statements represent the Company’s intentions, plans, expectationsand beliefs, and are subject to risks, uncertainties and other factors, many of which are outsidethe Company’s control. These factors could cause actual results to differ materially from suchforward-looking statements. For a description of these factors, see the section titled “Forward-Looking Statements” in the Company’s Quarterly Report on Form 10-Q for the fiscal quarterended December 31, 2004.

Printed in U.S.A. WH# CC-3Q05

* CSC’s fiscal year ends the Friday closest to March 31.

INVESTMENT DATA

NYSE: CSCRecent Closing Price: 47.7 (2/14/05)52-Week Range: 38.07 – 58.00Shares Outstanding: 191.1 millionRegistered Shareholders: 11,730Institutional Ownership: 81%Average Daily Trading Volume:

3rd Quarter FY 2005 – 1,083,122Market Cap: $9.1 billion

RESEARCH COVERAGE

A.G. Edwards (Timothy Willi)Bear, Stearns ( Jim Kissane)Bernstein (Rod Bourgeois)CS First Boston (Dris Upitis)Deutsche Bank (Brandt Sakakeeny)Goldman Sachs (Greg Gould)J.P. Morgan Securities (Tien-tsin Huang)Jefferies & Co. ( Joe Vafi)KeyBanc Capital Markets (Michael Keller)Legg Mason (Bill Loomis)Lehman Brothers (Louis Miscioscia)Merrill Lynch (Greg Smith)Morgan Stanley (David Togut)Prudential Securities (Bryan Keane)Robert W. Baird (Timothy Byrne)SG Cowen & Co. (Moshe Katri)Smith Barney Citigroup (Pat Burton)Standard & Poor’s ( Richard Stice)Thomas Weisel Partners (David Grossman)UBS Warburg (Adam Frisch)Value Line (George Niemond)

SHAREHOLDER SERVICES

For more information regarding CSC:

• Shareholder services and literaturerequest line – (800)542-3070

• Web site – www.csc.com

• Registrar and transfer agent –Mellon Investor ServicesP.O. Box 3315S. Hackensack, New Jersey 07606(800)676-0654 or (201)329-8660www.MellonInvestor.com

• CSC Investor Relations –Bill Lackey

Director, Investor Relations (310)615-1700

Lisa RungeManager, Investor Relations(310)615-1680

Email: InvestorRelations@csc.com

• Headquarters2100 East Grand AvenueEl Segundo, California 90245, USA(310)615-0311

CSC’S SERVICES ENCOMPASS

SEVERAL BROAD AREAS

• Outsourcing – Involves operating all or a portion of a customer’s technologyinfrastructure. CSC also provides business process outsourcing, which isthe management of a client’s non-corebusiness functions.

• IT & Professional Services – Designing,developing, implementing and integrat-ing complete information systems, aswell as advising clients on the strategicacquisition and utilization of IT.

RECENT ENGAGEMENTS INCLUDE:

• Internal Revenue Service (IRS) –Under a new task order received fromthe IRS, CSC will perform work on thenext phase of the Customer AccountData Engine (CADE) project. CADE,the cornerstone of the IRS’ BusinessSystems Modernization program,will eventually replace the agency’santiquated Individual Master File systemand become the single database foraccount and tax return data.

• Sun Microsystems – Sun Microsystemsselected CSC for a global IT applicationsmanagement services agreement. CSCwill assume responsibility for the provi-sion of all applications development andsupport services for Sun’s global opera-tions in the U.S., Europe and Asia Pacific.CSC will manage Sun’s full portfolio ofinternal business systems applications.

• U.S. Army – An Expedited Professionaland Engineering Support Services(EXPRESS) blanket purchase agree-ment was awarded to CSC as a teamleader to provide technical domainadvisory and assistance services to the U.S. Army Aviation & MissileCommand (AMCOM). CSC will sup-port AMCOM’s mission to guaranteethe Army’s technological superiorityon the battlefield.

• U.S. Navy – DynCorp Technical Services, a CSC company, won a contract for the operation and mainte-nance of the U.S. Navy’s AtlanticUndersea Test and Evaluation Center(AUTEC). CSC’s Federal Sector busi-ness unit will provide services thatinclude the scheduling and conduct of test programs; operation of rangeinstrumentation and test support systems; and performance of all baseoperations functions.

• U.S. Patent and Trademark Office(USPTO) – CSC won a systems development and integration contractto provide services to the USPTO.The agreement is one of the largest IT contracts ever awarded by theUSPTO. Since 1997, CSC has helpedthe USPTO develop and maintaininformation systems that are modern-izing business processes and movingthe agency steadily forward into world-class e-government operations.

$$ in billions

14

12

10

8

6

4

2

FY00 FY01 FY02 FY03 FY04

FIRST NINE MONTHS FISCAL 2005REVENUES FROM CONTINUINGOPERATIONS BY BUSINESS SERVICE*

* Based on CSC estimates.

OUTSOURCING . . . . . . . . . . . . . . . . . . . . 51%Global Commercial 47%U.S. Federal Sector 4%

IT & PROFESSIONAL SERVICES . . . . . . . . 49%Global Commercial 19%U.S. Federal Sector 30%

47%

4%

30%

19%

CSC REVENUE GROWTHFROM CONTINUING OPERATIONSFY 2000-2004*

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