Avnet Computer and Digital Equipment Corp. will hold three free seminars on the subjects of "Focus on Quality Solutions," "Plant Maintenance and Production Management" and "Strategic Use of Computers in Process Industries." They all will start at 8 a.m. at 6985 Union Park Center on Thursday, March 21; Thursday, April 11; and Thursday, April 25. Because seating is limited, reservations can be made by calling 1-800-541-3364 or 266-1115.