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Computing and IT in the WorkplaceCT006-1
Human Aspects of Computing
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Computing and IT in the Workplace Chapter 2 2
Learning Outcomes
At the end of this section,YOU should be able to:
To explain importance of the human computer interface aspects in IT
To explain and describe the concepts of ergonomics
To explain computer related health issues and the prevention
To explain and discuss the usable interface
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Computing and IT in the Workplace Chapter 2 3
Topics we will cover
Human Computer Interface (HCI)
The importance of HCI
Human Factors
Health concerns of Computer use
Ergonomics
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Computing and IT in the Workplace Chapter 2 4
Overview of Human Computer Interface
Definition of HCI
HCI is concerned with the design, evaluation
and implementation of interaction computing
systems for human use and with the study of
major phenomena surrounding them
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Computing and IT in the Workplace Chapter 2 5
Human Computer Interface
Human
Individual user, a group of users that work
together
A sequence of user in an organization eachdealing with some part of the task or process.
They use technology
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Computing and IT in the Workplace Chapter 2 6
Human Computer Interface
Computer
Any technology ranging from the general desktop
to a large scale computer system, a process
control or an embedded system
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Human Computer Interface
Interaction
Communication between user and computer
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Designing computer systems that support people so
that they can carry out their activities productively
and safely
HCI is used to describe the interaction between a
user and a computer
Computer is not just the PC, but also machines like
photocopiers, microwave and etc.
Human Computer Interface
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Importance of HCI
The importance of HCI
Concerned with the user performance (Human
Factors and Ergonomics)
Produce usable and safe system as well asfunctional system
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To improve
Safety
Utility (functionality)
Effectiveness (do the right thing)
Efficiency (do things right)
Usability
Simplicity
Importance of HCI
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System failure & HCI
16% of the projects are successful
31% are partially successful
53% of projects are fail
Failure is overwhelming due to human rather than
technical factors
Importance of HCI
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Why system fail?
Inadequate requirements 13%
Lack of user participation 12%
Inadequate resources 11% Unrealistic expectation 10%
Lack of support at senior level 9%
Changing specifications 8%
Lack of planning 8%
Importance of HCI
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All the discipline that related to HCI
Psychology and cognitive science (give the
knowledge of users perceptual, Cognitive and
problem solving skills, ergonomics for the usersphysical capabilities)
Importance of HCI
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Sociology and organization psychology
(understand the wider context of the interaction)
Computer science and engineering (build the
necessary technology) Business (marketing)
Graphic (effective interface presentation)
Technical (produce user manual)
Importance of HCI
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Health Concerns of Computer Use
Computer vision syndrome
(CVS)eye and vision
problems
What are some health concerns of computer use?
Repetitive strain injury (RSI)
Computer addictionwhen
computer consumes entire
social life
Tendonitisinflammation of
tendon due to repeated motion
Carpal tunnel syndrome
(CTS)inflammation of nerve
that connects forearm to palm
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How can you ease eyestrainwhen working at the computer?
Health Concerns of Computer Use
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Health Concerns of Computer Use
Repetitive Strain Injuries (RSI)
Wrist, hand, arm, and neck injuries as a
result of forced muscle groups through fast,
repetitive motions Typing on a keyboard-based device
(computer, musical instrument)
Moving groceries items over a scanner
Preventive measures: change in technique
of operating the instruments, take a rest
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Health Concerns of Computer Use
What precautions can prevent tendonitis or carpal
tunnel syndrome? Take frequent breaks during computer session
Use wrist rest
Exercise handsand arms
Minimize number
of times you
switch betweenmouse and
keyboard
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Computing and IT in the Workplace Chapter 2 19
Health Concerns of Computer Use
Back & Neck Pains
Possible causes:
Improper use of chairs
Improper ways of positioning keyboardand/or display screen
Preventive measure: use adjustable,
special-purpose furniture
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Computing and IT in the Workplace Chapter 2 20
Health Concerns of Computer Use
Electromagnetic Fields (EMFs)
Waves of electrical and magnetic energies
generated by electrical devices
Strongest fields are emitted from the sidesand backs of terminals and CRT display
screens
Noise
Generated by power supply fan, impact
printer
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Computing and IT in the Workplace Chapter 2 22
Green Computing
Reducing electricity and environmental waste while
using computer
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Computing and IT in the Workplace Chapter 2 23
Review Questions
How could health related disorders and injuriesdue to computer use be prevented?
Explain and discuss an appropriate workplacedesign.
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Computing and IT in the Workplace Chapter 2 24
Q & A
Question and Answer Session
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Topic and Structure of next session
Ethical and Legal Issues
What we will cover next
Recommended