POWER OF ATTORNEY OF DIRECTOR ----------------------------- KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of International Business Machines Corporation, a New York corporation, which will file with the Securities and Exchange Commission, Washington, D.C., under the provisions of the Securities Law, an Annual Report for 1996 on Form 10-K, hereby constitutes and appoints Louis V. Gerstner, Jr., G. Richard Thoman, Lawrence R. Ricciardi, John R. Joyce, Jeffrey D. Serkes, and John E. Hickey his true and lawful attorneys-in-fact and agents, and each of them with full power to act without the others, for him or her and in his or her name, place and stead, in any and all capacities, to sign said 10-K Annual Report and any and all amendments thereto, and any and all other documents in connection therewith, with the Securities and Exchange Commission, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 25th day of February, 1997. ---- -------- /s/ Cathleen P. Black ------------------------- Director CATHLEEN P. BLACK POWER OF ATTORNEY OF DIRECTOR ----------------------------- KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of International Business Machines Corporation, a New York corporation, which will file with the Securities and Exchange Commission, Washington, D.C., under the provisions of the Securities Law, an Annual Report for 1996 on Form 10-K, hereby constitutes and appoints Louis V. Gerstner, Jr., G. Richard Thoman, Lawrence R. Ricciardi, John R. Joyce, Jeffrey D. Serkes, and John E. Hickey his true and lawful attorneys-in-fact and agents, and each of them with full power to act without the others, for him or her and in his or her name, place and stead, in any and all capacities, to sign said 10-K Annual Report and any and all amendments thereto, and any and all other documents in connection therewith, with the Securities and Exchange Commission, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 25th day of February, 1997. ---- -------- /s/ Harold Brown ------------------------- Director HAROLD BROWN POWER OF ATTORNEY OF DIRECTOR ----------------------------- KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of International Business Machines Corporation, a New York corporation, which will file with the Securities and Exchange Commission, Washington, D.C., under the provisions of the Securities Law, an Annual Report for 1996 on Form 10-K, hereby constitutes and appoints Louis V. Gerstner, Jr., G. Richard Thoman, Lawrence R. Ricciardi, John R. Joyce, Jeffrey D. Serkes, and John E. Hickey his true and lawful attorneys-in-fact and agents, and each of them with full power to act without the others, for him or her and in his or her name, place and stead, in any and all capacities, to sign said 10-K Annual Report and any and all amendments thereto, and any and all other documents in connection therewith, with the Securities and Exchange Commission, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 25th day of February, 1997. ---- -------- /s/ Dormann ------------------------- Director JUERGEN DORMANN POWER OF ATTORNEY OF DIRECTOR ----------------------------- KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of International Business Machines Corporation, a New York corporation, which will file with the Securities and Exchange Commission, Washington, D.C., under the provisions of the Securities Law, an Annual Report for 1996 on Form 10-K, hereby constitutes and appoints Louis V. Gerstner, Jr., G. Richard Thoman, Lawrence R. Ricciardi, John R. Joyce, Jeffrey D. Serkes, and John E. Hickey his true and lawful attorneys-in-fact and agents, and each of them with full power to act without the others, for him or her and in his or her name, place and stead, in any and all capacities, to sign said 10-K Annual Report and any and all amendments thereto, and any and all other documents in connection therewith, with the Securities and Exchange Commission, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 25th day of February, 1997. ---- -------- /s/ Louis V. Gerstner, Jr. ------------------------- Louis V. Gerstner, Jr. Chairman of the Board and Chief Executive Officer POWER OF ATTORNEY OF DIRECTOR ----------------------------- KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of International Business Machines Corporation, a New York corporation, which will file with the Securities and Exchange Commission, Washington, D.C., under the provisions of the Securities Law, an Annual Report for 1996 on Form 10-K, hereby constitutes and appoints Louis V. Gerstner, Jr., G. Richard Thoman, Lawrence R. Ricciardi, John R. Joyce, Jeffrey D. Serkes, and John E. Hickey his true and lawful attorneys-in-fact and agents, and each of them with full power to act without the others, for him or her and in his or her name, place and stead, in any and all capacities, to sign said 10-K Annual Report and any and all amendments thereto, and any and all other documents in connection therewith, with the Securities and Exchange Commission, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 25th day of February, 1997. ---- -------- /s/ Nannerl O. Keohane ------------------------- Director NANNERL O. KEOHANE POWER OF ATTORNEY OF DIRECTOR ----------------------------- KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of International Business Machines Corporation, a New York corporation, which will file with the Securities and Exchange Commission, Washington, D.C., under the provisions of the Securities Law, an Annual Report for 1996 on Form 10-K, hereby constitutes and appoints Louis V. Gerstner, Jr., G. Richard Thoman, Lawrence R. Ricciardi, John R. Joyce, Jeffrey D. Serkes, and John E. Hickey his true and lawful attorneys-in-fact and agents, and each of them with full power to act without the others, for him or her and in his or her name, place and stead, in any and all capacities, to sign said 10-K Annual Report and any and all amendments thereto, and any and all other documents in connection therewith, with the Securities and Exchange Commission, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 25th day of February, 1997. ---- -------- /s/ Charles F. Knight ------------------------- Director CHARLES F. KNIGHT POWER OF ATTORNEY OF DIRECTOR ----------------------------- KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of International Business Machines Corporation, a New York corporation, which will file with the Securities and Exchange Commission, Washington, D.C., under the provisions of the Securities Law, an Annual Report for 1996 on Form 10-K, hereby constitutes and appoints Louis V. Gerstner, Jr., G. Richard Thoman, Lawrence R. Ricciardi, John R. Joyce, Jeffrey D. Serkes, and John E. Hickey his true and lawful attorneys-in-fact and agents, and each of them with full power to act without the others, for him or her and in his or her name, place and stead, in any and all capacities, to sign said 10-K Annual Report and any and all amendments thereto, and any and all other documents in connection therewith, with the Securities and Exchange Commission, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 25th day of February, 1997. ---- -------- /s/ Lucio A. Noto ------------------------- Director LUCIO A. NOTO POWER OF ATTORNEY OF DIRECTOR ----------------------------- KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of International Business Machines Corporation, a New York corporation, which will file with the Securities and Exchange Commission, Washington, D.C., under the provisions of the Securities Law, an Annual Report for 1996 on Form 10-K, hereby constitutes and appoints Louis V. Gerstner, Jr., G. Richard Thoman, Lawrence R. Ricciardi, John R. Joyce, Jeffrey D. Serkes, and John E. Hickey his true and lawful attorneys-in-fact and agents, and each of them with full power to act without the others, for him or her and in his or her name, place and stead, in any and all capacities, to sign said 10-K Annual Report and any and all amendments thereto, and any and all other documents in connection therewith, with the Securities and Exchange Commission, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 25th day of February, 1997. ---- -------- /s/ John B. Slaughter ------------------------- Director JOHN B. SLAUGHTER POWER OF ATTORNEY OF DIRECTOR ----------------------------- KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of International Business Machines Corporation, a New York corporation, which will file with the Securities and Exchange Commission, Washington, D.C., under the provisions of the Securities Law, an Annual Report for 1996 on Form 10-K, hereby constitutes and appoints Louis V. Gerstner, Jr., G. Richard Thoman, Lawrence R. Ricciardi, John R. Joyce, Jeffrey D. Serkes, and John E. Hickey his true and lawful attorneys-in-fact and agents, and each of them with full power to act without the others, for him or her and in his or her name, place and stead, in any and all capacities, to sign said 10-K Annual Report and any and all amendments thereto, and any and all other documents in connection therewith, with the Securities and Exchange Commission, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 25th day of February, 1997. ---- -------- /s/ Alex Trotman ------------------------- Director ALEX TROTMAN POWER OF ATTORNEY OF DIRECTOR ----------------------------- KNOW ALL PERSONS BY THESE PRESENTS, that the undersigned Director of International Business Machines Corporation, a New York corporation, which will file with the Securities and Exchange Commission, Washington, D.C., under the provisions of the Securities Law, an Annual Report for 1996 on Form 10-K, hereby constitutes and appoints Louis V. Gerstner, Jr., G. Richard Thoman, Lawrence R. Ricciardi, John R. Joyce, Jeffrey D. Serkes, and John E. Hickey his true and lawful attorneys-in-fact and agents, and each of them with full power to act without the others, for him or her and in his or her name, place and stead, in any and all capacities, to sign said 10-K Annual Report and any and all amendments thereto, and any and all other documents in connection therewith, with the Securities and Exchange Commission, hereby granting unto said attorneys-in-fact and agents, and each of them, full power and authority to do and perform any and all acts and things requisite and necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents or any of them may lawfully do or cause to be done by virtue hereof. IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney this 25th day of February, 1997. ---- -------- /s/ Charles M. Vest ------------------------- Director CHARLES M. VEST