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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: ...ansistor]]s and in the late [[1960s]] and early [[1970s]] [[microprocessor|semiconductor integrated cir...
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...
19: ...r variation on the mouse, invented in the early [[1970]]s by [[Bill English (computer engineer)|Bill En...
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. - Global warming (53726 bytes)
26: ...n observed may vary according to the focus of the user of the term: sometime since the [[Industrial Revo...
40:
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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