The Telephone

Carl F.Gauss and Ernst H. Weber build the electromagnetic telegraph. The telegraph was the first step to making electrical signals travel from one device to another.

Nov 19, 1834

http://mysite.du.edu/~jcalvert/tel/morse/morse.htm

Alexander Graham Bell discovers the principle of the telephone.

Mar 8, 1874

http://www.biography.com/people/alexander-graham-bell-9205497

The telephone, By: katelyn newman, period 5

Period: Mar 17, 1874 to Feb 1, 2013

the first telephone was invented by Alexander Graham Bell

Mar 7, 1876

http://sln.fi.edu/franklin/inventor/bell.html

First telephone call

Mar 10, 1876

Telephone subscribers began to be designated by numbers rather than names. This allows more subscribers per switching station.

May 28, 1879

http://inventors.about.com/od/bstartinventors/a/telephone.htm

The first automatic dial system was patented by a Kansas City undertaker. Switchboard operators were no longer necessary to make a telephone call.

Jul 2, 1891

http://www.idsa.org/first-dial-telephone-1897

Oliver Lodge demonstrates wireless communication over a distance of 150 yards. This is the beginnings of cell phone technology.

Apr 4, 1894

http://www.wirelesscommunicationsc.com/

The first coin telephone was installed in Hartford, Connecticut.

Aug 28, 1900

http://www.telephonetribute.com/payphones.html

Bell System introduces the touch tone phone. This telephone made a different beep for each number instead of counted clicks for each number.

Dec 10, 1963

first apple iphone released

Jun 29, 2007

Apple iphone 5 released, one of the most popular phones today

Sep 21, 2012

http://www.apple.com/pr/library/2012/09/24iPhone-5-First-Weekend-Sales-Top-Five-Million.html