Computer Timeline By facebooker_1267089034 Jun 19, 1939 The First Computer was created Mar 26, 1942 PAscal invented the first calculator Apr 30, 1944 The MARK 1 was created Aug 23, 1947 The ENAC was created Jul 3, 1948 The transistor was invented Feb 4, 1951 The UNIVAC 1 was created Dec 14, 1958 The computers start to use transistors Jun 28, 1960 Computers started to have integrated circuits Jan 17, 1971 The Revolution of microprocesors Nov 7, 1980 New technologies and computers