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  1. Computer (32773 bytes)
    18: ... the problem, the result must be displayed to the user as [[output]] through output devices like light b...
    20: Novice users, especially children, often have difficulty unde...
    54: ...cted from [[thermionic valve]]s (tubes). In the [[1950s]] and [[1960s]] valves were gradually replaced ...
    84: ...DVAC]]. The [[EDVAC]] was not operational until [[1953]] due to technical difficulties in implementing ...
    90: ...ern Automatic Computer|SEAC]] [[US]] [[May 9]], [[1950]]
  2. Computer mouse (29399 bytes)
    11: ...http://www.freepatentsonline.com/3987685.html 3987685].]]
    15: ... System"''. At the time, Engelbart intended that users would ''continuously'' hold the mouse in one han...
    54: ...ons, ranging from five to more. Depending on the user's preferences, the extra buttons might allow forw...
    64: ...actile feedback, gives a better response from the user.
    70: ...on a single press. Modern operating systems allow users to set the maximum interval in which the two cli...
  3. Global warming (53726 bytes)
    19: ... [http://www.sciencemag.org/cgi/reprint/306/5702/1686.pdf]
    26: ...n observed may vary according to the focus of the user of the term: sometime since the [[Industrial Revo...
    42: ...org/10.1126%2Fscience.1096109| Science 306, 679 - 682 (2004)].
    58: ... of more than 50 parts per million by volume from 1958 to the present.
    78: ...cally from 315 [[ppm]]. The concentration reached 376ppm in [[2003]]. South Pole records show similar ...

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