Memorial services are scheduled Friday for Gerald Graham Probst, 65, retired chairman and chief executive officer of the former Sperry Corp., who died in his sleep Jan. 15, 1989, at his home in Holladay, Salt Lake County.

The services will be held at 2 p.m. in the Mt. Olympus Second Ward chapel, 3862 Oakview Dr. (4275 South).Mr. Probst headed Sperry in September 1986, when the $5 billion computer and defense systems company merged with Burroughs Corp. to form Unisys Corp. He retired at the end of 1986 but continued as a member of the Unisys International Advisory Board.

He joined Sperry in St. Paul, Minn., in 1961 after a career as an Air Force officer. He held many positions with Sperry Univac. He was named president of the division in 1971, corporate vice president in 1974, executive vice president in 1975, president in 1980 and was elected chairman of the Sperry board in 1982.

Mr. Probst was born Sept. 11, 1923, in Ogden. After graduating from Ogden High School he joined the U.S. Army Air Force. He received a commission, commanded a B-24 in missions over Europe during World War II and was awarded the Distinguished Flying Cross and the Air Medal with three oak leaf clusters.

Following military service he attended the U. of U., where he was graduated in 1951 with a bachelor's degree with honors in electrical engineering. In 1952 he returned to the Air Force in its Research and Development Command. While in the military he attended Massachusetts Institute of Technology and received a master's degree in electrical engineering in 1956 and was awarded a Corporate Leadership Award from MIT in 1980.

For many years he was a member of the board of Mellon Bank, Pittsburgh; trustee of the Logistic Command Institute, Washington, D.C.; and in the 1970s received the U. of U. Outstanding Alumnus Award. He was recently elected chairman of the U. National Advisory Council and had lived in New York City until a year ago when he moved to Salt Lake City.

Mike Mattsson, U. of U. vice president for development, said Probst was, "without question, among the most distinguished of U. of U. alumni. He had a remarkable career from the time he was graduated from the university, to which he was a major donor, and played an important role on the U. of U. National Advisory Council. His service will be greatly missed at the university."

In lieu of flowers the family suggests contributions to the U. of U. Campaign for Utah Fund or the Cancer Society.