CSC TO WEBCAST THIRD QUARTER FY 2007 EARNINGS TELECONFERENCE

News Release -- January 31, 2007

EL SEGUNDO, Calif., Jan. 31 -- Computer Sciences Corporation (NYSE: CSC) today announced that it will release third quarter fiscal 2007 financial results on Tuesday, February 6, at approximately 4:10 p.m. EST. An earnings conference call will follow at 5 p.m. EST.

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 Tuesday, February 13, at 8 p.m. EST.

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 78,000 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 $14.6 billion for the 12 months ended Sept. 29, 2006. For more information, visit the company’s Web site at www.csc.com.