James Madison Ltd. has appointed Norman F. Hecht president and chief administrative officer of its subsidiary Madison National Bank, K. Donald Menefee, chairman and president of the parent company, announced Friday.

Formerly senior executive vice president of the Washington bank, Hecht supervised the development of Madison's computer-based financial services. Madison National is the only area bank offering personal and commercial banking services to personal computer users, according to spokesman John David Allen.

Hecht was president of American Investment Corp. before joining the bank in 1971 as branch manager of the Market office. Before that he was comptroller for J. C. Penney and engineered the conversion of that company's retail operations to computer-based operations.

Menefee, who had held the post of president until Hecht's appointment, will continue as Madison National Bank's chief executive officer and chairman of the board, with overall responsibility for the bank and its parent organization. As president, Hecht will supervise day-to-day management of the bank.

Madison National Bank, the city's seventh-largest bank with about $300 million in assets, is one of four subsidiaries of James Madison Ltd. A JML spokesman said the bank's directors recently approved an agreement to acquire two local banks: McLean Bank and First Continental Bank in Silver Spring.