Development of Computers

  • First freely programmable computer.

    First freely programmable computer.
    The First freely programmable computer was invented by Konrad Zuse in 1936.
  • The Transistor

    It was developed by John Bardeen, Walter Brattain & Wiliam Shockley.The transistor is an influential invention that changed the course of history for computers. The first generation of computers used vacuum tubes; the second generation of computers used transistors; the third generation of computers used integrated circuits; and the fourth generation of computers used microprocessors.

    The UNIVAC I delivered to the U.S. Census Bureau was the first commercial computer to attract widespread public attention.
    Speed: 1,905 operations per second
    Input/output: magnetic tape, unityper, printer
    Memory size: 1,000 12-digit words in delay lines
    Memory type: delay lines, magnetic tape
    Technology: serial vacuum tubes, delay lines, magnetic tape
    Floor space: 943 cubic feet
    Cost: F.O.B. factory $750,000 plus $185,000 for a high speed printer
    Project leaders: J. Presper Eckert and Joh
  • Douglas Engelbart changed the way computers worked, from specialized machinery that only a trained scientist could use, to a user-friendly tool that almost anyone can use. He invented or contributed to several interactive, user-friendly devices: the computer mouse, windows, computer video teleconferencing, hypermedia, groupware, email, the Internet and more.
  • Ethernet

    The ethernet is a system for connecting computers within a building using hardware running from machine to machine. It differs from the Internet, which connects remotely located computers by telephone line, software protocol and some hardware. Ethernet uses some software (borrowed from Internet Protocol), but the connecting hardware was the basis of the patent (#4,063,220) involving newly designed chips and wiring
  • Osbourne I

    Osbourne I
    Adam Osborne completed the first portable computer, the Osborne I, which weighed 24 pounds and cost $1,795. The price made the machine especially attractive, as it included software worth about $1,500. The machine featured a 5-inch display, 64 kilobytes of memory, a modem, and two 5 1/4-inch floppy disk drives.
  • <a href="http://www.youtube.com/watch?v=JXvJyyBO5_k&feature=related" rel="ugc nofollow">History of Mac Video </a>
    In December, 1983, Apple Computers ran its' famous "1984" Macintosh television commercial, on a small unknown station solely to make the commercial eligible for awards during 1984. The commercial cost 1.5 million and only ran once in 1983, but news and talk shows everywhere replayed it, making TV history. The next month, Apple Computer ran the same ad during the NFL Super Bowl, and millions of viewers saw their first glimpse of the Macintosh computer.
  • Microsoft Windows

    <A HREF="http://inventors.about.com/od/mstartinventions/a/Windows.htm">Microsoft Windows</A> was the next generation operating machine.