Ann McHoesAnn McIver McHoes has been writing about computers for 25 years. She co-authored, with the late Ida M. Flynn, the first four editions of Understanding Operating Systems and is now sole author of this classic textbook, which has received awards for exellence from the Text and Academic Authors Association. She teaches at Duquesne University and has also taught business and computer science classes at Chatham University and Carlow University. Read More Read Less