Seminars in Hearing, Table of Contents Semin Hear 1990; 11(1): 28-38DOI: 10.1055/s-0028-1091335 Copyright © 1990 by Thieme Medical Publishers, Inc. Evolution of Digital Technology in Hearing Aids Gregory P. Widin 3M Biosciences Laboratory and 3M Hearing Health, St. Paul, Minnesota. Recommend Article Abstract PDF Download Buy Article PDF (826 kb)