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- 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]] - Computer mouse (29399 bytes)
11: ...[http://www.freepatentsonline.com/3543541.html 3541541]. Ball and wheel by ''Rider'', 9/74, [http://www...
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... - Global warming (53726 bytes)
26: ...n observed may vary according to the focus of the user of the term: sometime since the [[Industrial Revo...
42: ..."[http://www.nature.com/news/2005/050207/full/433562a.html]. Moberg's results are consistent with thos...
58: ... of more than 50 parts per million by volume from 1958 to the present.
78: ...surement of CO<sub>2</sub> mixing ratios began in 1958 at [[Mauna Loa]]. Since then, the annually aver...
84: ...for half of the temperature variations prior to [[1950]], but that the net effect of such natural forci...
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