electronic timeline By Ben Fan May 17, 1912 Antikythera mechanism Antikythera mechanism was found Jun 30, 1945 von Neumann architecture Feb 14, 1946 Atanasoff–Berry Computer Sep 9, 1964 BASIC Oct 9, 1965 PL\I Sep 9, 1968 Pascal language Pascal was begun in 1968 by Niklaus Wirth Oct 9, 1970 UNIX Oct 9, 1972 C language Oct 9, 1975 MITS Altair first personal computer, Oct 9, 1990 DOS 4.01 Oct 9, 1991 MS-DOS 5.0 relaese Apr 9, 1995 JavaScript Jan 1, 2000 Y2K problem Mar 24, 2001 MAC OS 10.0