Analogue and Digital Communication Techniques - Grahame Smillie - Google Books

http://books.google.de/books?id=WJ9qkNpScFAC&lpg=PA241&ots=CB9sKcNGW8&dq=%22Manchester-II%22%20code&hl=de&pg=PA241#v=onepage&q&f

The rapid expansion of digital communications, particularly in the fields of TV and mobile telephones does not overide the need for a clear understanding of analogue frequencies. Moreover, analogue technology will play an important role in communications…