Computing Science By Bryan Rube 3000 BCE ABACO 1623 Calculation Rule 1641 Desktop Calculator. 1871 TRUE AND FALSE 1885 Census. 1934 Automatic Controlled Sequence Calculator 1940 FIRST GENERATION Period: 1940 to 1952 FIRST GENERATION 1943 ENIAC 1944 Stored Program. 1951 UnivacI & the Univacl II 1952 SECOND GENERATION Period: 1952 to 1964 SECOND GENERATION 1964 THIRD GENERATION Period: 1964 to 1971 3rd Generation 1971 FOURTH GENERATION Period: 1971 to 1981 4th Generation 1981 FIFTH GENERATION Period: 1981 to 2018 5th Generation