1890 Herman Hollerith, an American inventor, built a machine to count a census. It used punched cards and gears like the previous ones, but it worked with electricity. His company grew to become the first computer manufacturer in the world: IBM.
1946 The first computer called ENIAC is introduced to the public. It was built at the University of Pennsylvania (USA) and operated with more than 17,000 vacuum tubes. It could make 5,000 additions and 300 multiplications per second.
1958 The second generation of computers starts, which used transistors to process information instead of vacuum tubes. New programming languages such as COBOL and FORTRAN were developed.
1964 Integrated circuits begin to be used in the computers, which increased the processing capacity and reduced the size of the machines.
1971 The microprocessor appears: a single integrated circuit in which the basic elements of the computer meet. The first personal computers begin to develop.
1976 Steve Jobs and Steve Wozniak make the Apple I. This computer allowed users to see what they were doing on a screen, unlike other models. Then an improved version called Apple II came, which sold millions of units.
1981 The IBM PC is on sale as a home computer and revolutionizes computing. It increases the development of software and operating systems with which computers run.
1990 It appears the WWW or Web, one of the main internet services, which makes the use of computers more useful in different areas.
1992 The development of smartphones starts with the presentation of the Simon phone that included calendar, address book, world clock and calculator, among other functions.
2001 A prototype tablet called Nokia 510 webtablet is introduced, with a 10 inches touch screen.