The document discusses the history of computer development from 1945 to 1969 in three periods: 1) 1945-1958 saw the creation of the earliest general-purpose electronic computers like ENIAC and UNIVAC. 2) 1959-1963 featured larger-scale transistor-based machines and the development of integrated circuits. 3) 1964-1969 was marked by the rise of integrated circuits and microchips, leading to advances like VLSI and early work in artificial intelligence.