Time line computer By lolasaso 500 BCE The abacus was the first device that helped the human being in solving aritmetic problems 1622 The calculation rule consisted of two graduated rules that slide one over the other 1642 The first adding machine was invented wich was also used to substract 1834 The first digital computer was invented it was programed by a series of punched cards that contained the instructions data 1930 an analog machine was the first that used electrical circuits 1945 The ENIAC was invented the first electronic computer was built in pensilvania to calculate artillery tables Period: 1951 to 1958 UNIVAC was designed by Eckerd it used vacuum tubes it was the first generation of computers Period: 1959 to 1964 Second generation were fast and small with new lenguages called high level lenguages 1964 Third generation 1971 fourth generation the processor of the computers was denomined microprocessor 1980 fifth generation 1990 sixth generation
