The document outlines the history of computers from the first to fifth generations. It describes the major innovations of each generation including the vacuum tube and UNIVAC in the first generation, the transistor in the second, integrated circuits in the third, microprocessors in the fourth, and research into artificial intelligence for the fifth generation under the Japanese government's Fifth Generation Computer Systems Project. Key inventors during these periods include Edison, Eckert, Mauchly, Bardeen, Shockley, Kilby, Noyce, Hoff, and Cray. Major computers mentioned include the Altair 8800, Apple II, IBM PC, IBM Blue Gene/L, and Cray 1.