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INF1520 Assignment 3 Comprehensive Solutions for 2024 Deadline July 15 2024

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Exam study book Human-computer Interaction of Alan Dix, Janet Finlay, Gregory D. Abowd, Russell Beale - ISBN: 9780130461094 (Accurate solutions)

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INF1520
Assignment 3
Comprehensive
Solutions for 2024
Deadline July 15
2024

, INF1520 Assignment 3 Comprehensive Solutions for

2024 Deadline July 15 2024

Question 1 [13]

1.1 Explain why the keys on a computer keyboard are

arranged in the order of QWERTY. (4)



The QWERTY keyboard layout was designed in the

1860s by Christopher Sholes, who aimed to prevent

jamming in early mechanical typewriters. Here’s why

the keys are arranged as QWERTY:




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, Jamming Prevention: Commonly used letter pairs

were separated to slow down typists and reduce

mechanical jamming of the typebars.



Typing Efficiency: The layout facilitated a balance

between the hands, allowing faster typing for trained

typists by alternating between the left and right

hands.



Historical Adoption: Once QWERTY became popular

with the success of early typewriters, inertia and

familiarity led to its continued use, despite other




For assistance with assignments whatsapp +254702715801

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