The 5 generations of computers By ixone12345 Period: 1940 to 1952 Militar-scientific Computers with valves Period: 1952 to 1964 1st commercial computers The valves become transistors Period: 1964 to 1971 Use of integrated circuits (reduced costs and increased processing capacity) Improvement in programming languages and utility programs appeared Period: 1971 to 1981 Characterized by the integration of electronic components Appearance of the microprocessor. All the basic elements in an integrated circuit Period: 1981 to 2020 Actual generation