professional communication

The typewriter wasinvented by christopher latham sholes

Jul 1, 1714

http://site.xavier.edu/polt/typewriters/tw-history.html

The telegraph was invented by samuel morse

Jan 1, 1836

http://www.history.com/topics/inventions/telegraph

The computer was invented by charles babbage

Jan 1, 1871

The telephone was invented by alexander granhem

Mar 10, 1876

http://www.history.com/topics/inventions/telegraph

The television was invented by John Logie Baird

Jan 1, 1926

https://www.nyu.edu/classes/stephens/History of Television page.htm

Email was invented by Mr Ayyadurai, Mr Tomlinson

Jan 1, 1978

http://www.nethistory.info/History of the Internet/email.html

Skype was invented janus friis and niklas zenstrom

Aug 29, 2003

http://techland.time.com/2011/05/10/a-brief-history-of-skype/