INF3720 Assignment 2 (COMPLETE ANSWERS) 2024 (602765)- DUE 2 August 2024
INF3720 Assignment 2 (COMPLETE ANSWERS) 2024 (602765)- DUE 2 August 2024
INF3720 Assignment 2 (COMPLETE ANSWERS) 2024 (602765)- DUE 2 August 2024 ; 100% TRUSTED workings, explanations and solutions
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Human Computer Interaction I (INF1520)
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INF1520
Assignment 3
(COMPLETE
ANSWERS) 2024 -
DUE 15 July 2024
, INF1520 Assignment 3 (COMPLETE ANSWERS) 2024 -
DUE 15 July 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, devised by Christopher Sholes
in the 1860s for early typewriters, was a solution to several key
challenges of that era:
1. Jamming Prevention: Sholes strategically placed
commonly paired letters apart to prevent the mechanical
arms of early typewriters from jamming when pressed in
quick succession.
2. Typist Efficiency: Despite its initial intent to slow typists
down to prevent jams, the QWERTY layout also allowed
trained typists to achieve a rhythm by alternating between
hands, which could increase efficiency over time.
3. Historical Legacy: Once QWERTY became the standard
for typewriters, its adoption was cemented through
manufacturing and training, making it difficult to shift to
alternative layouts despite their potential advantages.
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, 4. Modern Relevance: Despite criticisms about its efficiency
compared to layouts like Dvorak or Colemak, QWERTY
remains dominant due to its widespread familiarity, support
from software and hardware manufacturers, and the inertia
of historical adoption.
In summary, the QWERTY layout's design aimed to address
mechanical limitations and promote efficiency for early typists,
leading to its enduring legacy in today's digital keyboards and
devices.
1.2 There are, potentially, many mistakes that designers
can make when designing interfaces. Specify what
are the most problematic mistakes designers make.
(3)
Not Testing Usability: Designers sometimes skip usability
testing, missing opportunities to identify and address
usability issues before the interface is launched.
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