communication in hstory By isaac serna 100 petroglyphs were made in 10000 b.c. 100 cavedrawings were made in 30000 b.c. 3000 b.c. 100 pictograms made in 9000 b.c 100 Alphabet invented in 1000 b.c Period: 100 to Oct 10, 2014 communication in history Oct 13, 1440 Johannes gutenberg invents printig press Jan 7, 1714 First typewriter patent by Henry mill Period: Jan 7, 1714 to Oct 9, 2014 communication in history Oct 10, 1831 First eletric telegraph was made by joseph henry Oct 14, 1850 Z4 is the first commercial computer computer help Sep 9, 1867 First typewriter was made Mar 14, 1876 Telephone invented by Alexander graham bell History.com
