Robert Paul Crago, 76, a leader at Chevy Chase Presbyterian Church in Washington who was a supervising electrical engineer in the Gaithersburg offices of International Business Machines Corp. when he retired in 1989 after a 40-year career with the company, died Dec. 14 at Georgetown University Hospital. He had multiple myeloma.

He lived off and on in the Washington area since the early 1950s and in Bethesda since the 1960s.

Mr. Crago, a Pittsburgh native, received a bachelor's degree in electrical engineering from Carnegie Mellon University and a master's degree in electrical engineering from the California Institute of Technology. Eta Kappa Nu, the national electrical engineering honor society, named him outstanding young electrical engineer in 1957.

He served in the Navy during World War II.

Mr. Crago joined IBM in New York, where he helped develop its first stored program computer. In the 1960s, he organized IBM's communications laboratory in Bethesda. He later was director of civil programs and a vice president. He also helped in the redesign of a portable military field computer.

After retiring, he consulted into the 1990s.

An elder and trustee at Chevy Chase Presbyterian Church, Mr. Crago in the 1970s chaired the committee that organized the Union Presbytery, which became the National Capital Presbytery. This reunited northern and southern divisions of the Presbyterian Church.

He was a member of the financial planning committee of Community Ministry of Montgomery County.

Survivors include his wife of 52 years, Betty Jane Crago; two daughters, Cathy Crouch of Bethesda and Peggy Morrison of Falls Church; four grandchildren; and four great-grandchildren.