| Pursuant                to 18 U.S.C. Section 1350, I, Michael W. Laphen, Chief Executive                Officer                of Computer Sciences Corporation (the “Company”), hereby certify                that:  |
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| (1)                                                                                                                                                                                                                                    | the                Company’s Quarterly Report on Form 10-Q for the fiscal quarter ended June                29, 2007 (the “Report”) fully complies with the requirements of Section                13(a) or 15(d), as applicable, of the Securities Exchange Act of                1934;                and  |
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| (2)                                                                                                                                                                                                                                    | the                information contained in the Report fairly presents, in all material                respects, the financial condition and results of operations of the                Company.  |
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| Dated:                January 11, 2008                                                                                                                                                                                                 |  /s/                Michael W.                Laphen                                                          |
|                                                                                                                                                                                                                                        |      Michael                W. Laphen |
|                                                                                                                                                                                                                                        |      Chief                Executive Officer |