Micro D Inc. reported second-quarter net earnings of $703,000, contrasted with a year-earlier loss of $567,000. Revenue for the quarter was $47.3 million, up from $23.8 million. For the first half, the Santa Ana-based microcomputer products distributor posted $1.1-million net income, contrasted with a $644,000 net loss a year earlier. Revenue was $89.4 million, up 87% from $47.8 million. Linwood A. (Chip) Lacy Jr., president, said the company attributed its performance in part to sales it culled from a bankrupt competitor's customer base.