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  1.  
    What famous device did Engelbart invent that revolutionized computer human interaction?
    A. Keyboard B. Monitor C. Touchscreen D. Computer Mouse
  2.  
    When did Engelbart recieve the patent for the invention from the previous question?
    A. 1965 B. 1975 C. 1967 D. 1970
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  1.  
    What famous device did Engelbart invent that revolutionized computer human interaction?
    A. Keyboard B. Monitor C. Touchscreen D. Computer Mouse
  2.  
    When did Engelbart recieve the patent for the invention from the previous question?
    A. 1965 B. 1975 C. 1967 D. 1970

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