On this day in 1877 Thomas A. Edison conceived the first idea for his phonograph, the very first mechanical tool for recording and reproducing (replaying) sound. The phonograph also was the invention that first gained him public notice.
Dr. Harald Sack;
Video: Informatik der digitalen Medien
Vorlesung 01, Wintersemester 2005/2006
zum Thema Mediengeschichte, Entwicklung der Schrift, Buchdruck, Telekommunikation