Charles J. Brooks is currently co-owner and vice president of Educational Technologies Group, Inc., as well as co-owner of eITPrep, LLP, an online training company. He is in charge of research and product development at both organizations. A former electronics instructor and technical writer with the National Education Corporation, Charles taught and wrote on postsecondary EET curriculum, including introductory electronics, transistor theory, linear integrated circuits, basic digital theory, industrial electronics, microprocessors, and computer peripherals. Charles is the author of several boo...