CSC TO WEBCAST THIRD QUARTER FY 2008 EARNINGS TELECONFERENCE

News Release -- January 24, 2008

EL SEGUNDO, Calif., Jan. 24 -- Computer Sciences Corporation (NYSE: CSC) today announced that it will release preliminary fiscal third quarter 2008 financial results on Monday, February 4, at approximately 4:10 p.m. EST. An earnings conference call will follow at 5:00 p.m. EST. The dial-in numbers for the investment community are (888) 713-4487 (domestic) and (913) 312-0685 (international). The pass code is 5243920.

The conference call hosted by CSC senior management will be webcast simultaneously through a link on the company’s Web site at www.csc.com/investorrelations. Webcast participants will be in a listen-only mode. A replay will be available on the CSC Web site from approximately one hour after the conclusion of the conference call through Wednesday, March 5, 2008, at 8:00 p.m. EST. The replay dial-in numbers are (888) 203-1112 (domestic) and (719) 457-0820 (international). The pass code is 5243920.

Computer Sciences Corporation is one of the world’s leading information technology (IT) services companies. CSC’s mission is to provide customers in industry and government with solutions crafted to meet their specific challenges and enable them to profit from the advanced use of technology.

With approximately 89,000 employees, CSC provides innovative solutions for customers around the world by applying leading technologies and CSC’s own advanced capabilities. These include systems design and integration; IT and business process
outsourcing; applications software development; Web and application hosting; and management consulting. Headquartered in El Segundo, Calif., CSC reported revenue of $15.5 billion for the 12 months ended September 28, 2007. For more information, visit the company’s Web site at www.csc.com.