IKT Beñat and Irune By ARTIBATI2 40,000 BCE Humans learn how to use fire one more zero (0) Paleolithic 4000 BCE The wheel is invented Neolithic 100 BCE Paper The middle ages 1831 Electric generator Contemporary period 1947 First computer The 20th century 1973 Mobile phone The 20th century 1999 WI-FI Networks The 21th century
