Control Data: The Minneapolis-based company, which is...

Control Data: The Minneapolis-based company, which is shutting down its supercomputer business, reported a 55% decline in earnings. First-quarter earnings were $3.5 million on revenue of $843.5 million, compared to earnings of $7.7 million on revenue of $902.2 million for the same period a year earlier. The latest results were hurt by losses in computer systems and supercomputer operations. There were gains, however, in such areas as information services and government systems.