7/27/2019 3 CITW Human Aspects of Computing

1/25

Computing and IT in the WorkplaceCT006-1

Human Aspects of Computing

7/27/2019 3 CITW Human Aspects of Computing

2/25

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

7/27/2019 3 CITW Human Aspects of Computing

3/25

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

7/27/2019 3 CITW Human Aspects of Computing

4/25

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

7/27/2019 3 CITW Human Aspects of Computing

5/25

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

7/27/2019 3 CITW Human Aspects of Computing

6/25

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

7/27/2019 3 CITW Human Aspects of Computing

7/25Computing and IT in the Workplace Chapter 2 7

Human Computer Interface

Interaction

Communication between user and computer

7/27/2019 3 CITW Human Aspects of Computing

8/25Computing and IT in the Workplace Chapter 2 8

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

7/27/2019 3 CITW Human Aspects of Computing

9/25Computing and IT in the Workplace Chapter 2 9

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

7/27/2019 3 CITW Human Aspects of Computing

10/25Computing and IT in the Workplace Chapter 2 10

To improve

Safety

Utility (functionality)

Effectiveness (do the right thing)

Efficiency (do things right)

Usability

Simplicity

Importance of HCI

7/27/2019 3 CITW Human Aspects of Computing

11/25Computing and IT in the Workplace Chapter 2 11

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

7/27/2019 3 CITW Human Aspects of Computing

12/25Computing and IT in the Workplace Chapter 2 12

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

7/27/2019 3 CITW Human Aspects of Computing

13/25Computing and IT in the Workplace Chapter 2 13

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

7/27/2019 3 CITW Human Aspects of Computing

14/25Computing and IT in the Workplace Chapter 2 14

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

7/27/2019 3 CITW Human Aspects of Computing

15/25Computing and IT in the Workplace Chapter 2 15

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

7/27/2019 3 CITW Human Aspects of Computing

16/25Computing and IT in the Workplace Chapter 2 16

How can you ease eyestrainwhen working at the computer?

Health Concerns of Computer Use

7/27/2019 3 CITW Human Aspects of Computing

17/25Computing and IT in the Workplace Chapter 2 17

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

7/27/2019 3 CITW Human Aspects of Computing

18/25Computing and IT in the Workplace Chapter 2 18

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

7/27/2019 3 CITW Human Aspects of Computing

19/25

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

7/27/2019 3 CITW Human Aspects of Computing

20/25

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

7/27/2019 3 CITW Human Aspects of Computing

21/25

7/27/2019 3 CITW Human Aspects of Computing

22/25

Computing and IT in the Workplace Chapter 2 22

Green Computing

Reducing electricity and environmental waste while

using computer

7/27/2019 3 CITW Human Aspects of Computing

23/25

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.

7/27/2019 3 CITW Human Aspects of Computing

24/25

Computing and IT in the Workplace Chapter 2 24

Q & A

Question and Answer Session

7/27/2019 3 CITW Human Aspects of Computing

25/25

Topic and Structure of next session

Ethical and Legal Issues

What we will cover next