Exhibit 24 REGISTRATION STATEMENT POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS: That the undersigned officers and directors of Amdahl Corporation, a Delaware corporation (the "Corporation"), do hereby constitute and appoint John C. Lewis and Bruce J. Ryan and each of them separately, the lawful attorneys-in-fact and agents with full power and authority to perform all acts and to execute any and all instruments which said attorneys and agents, and either one of them, determine may be necessary, advisable or required to enable the Corporation to comply with the Securities Act of 1933, as amended, and any rules, regulations or requirements of the Securities and Exchange Commission in connection with this Registration Statement. Without limiting the generality of the foregoing power and authority, the powers granted include the power and authority to sign the names of the undersigned officers and directors in the capacities indicated below to this Registration Statement, to any and all amendments, both pre-effective and post-effective, and supplements to this Registration Statement, and to any and all instruments or documents filed as part of or in conjunction with this Registration Statement or amendments or supplements thereof, and each of the undersigned hereby ratifies and confirms that all said attorneys and agents, or either of them, shall do or cause to be done by virtue hereof. This Power of Attorney may be signed in several counterparts. IN WITNESS WHEREOF, each of the undersigned has executed this Power of Attorney as of the date indicated. Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed below by the following persons in the capacities and on the dates indicated. Signature Title Date - --------- ----- ---- /s/John C. Lewis Chairman of the Board, May 2, 1996 - ----------------------- President and John C. Lewis Chief Executive Officer (Principal Executive Officer) /s/Bruce J. Ryan Executive Vice May 2, 1996 - ----------------------- President, Chief Bruce J. Ryan Financial Officer and Corporate Secretary (Principal Financial Officer) /s/Ernest B. Thompson Vice President and May 2, 1996 - ----------------------- Controller Ernest B. Thompson (Principal Accounting Officer) /s/Keizo Fukagawa Director May 2, 1996 - ----------------------- Keizo Fukagawa /s/Michael R. Hallman Director May 2, 1996 - ----------------------- Michael R. Hallman /s/E. F. Heizer, Jr. Director May 2, 1996 - ----------------------- E. F. Heizer, Jr. /s/Kazuto Kojima Director May 2, 1996 - ----------------------- Kazuto Kojima /s/Burton G. Malkiel Director May 2, 1996 - ----------------------- Burton G. Malkiel, Ph.D. /s/George R. Packard Director May 2, 1996 - ----------------------- George R. Packard, Ph.D. /s/Walter B. Reinhold Director May 2, 1996 - ----------------------- Walter B. Reinhold /s/Takamitsu Tsuchimoto Director May 2, 1996 - ----------------------- Takamitsu Tsuchimoto /s/J. Sidney Webb Director May 2, 1996 - ----------------------- J. Sidney Webb