Struggling with a string of losses, Data...

Struggling with a string of losses, Data General Corp. announced that two of the computer company’s founders will take early retirement, including 52-year-old Chairman Edson D. de Castro. De Castro will retire Dec. 31, and Vice Chairman Herbert J. Richman, 56, will leave the company at the end of its fiscal year in September.

A statement from the firm gave no reasons for the retirements of the executives, who helped found Data General in 1968. De Castro was not available for comment.