際際滷

際際滷Share a Scribd company logo
CChhaapptteerr 11 
犖犖蹩蹩巌鹸犖犖犖園険犖÷犖犖園犖園犖犖犢犢犖犖犖萎鍵犖犖о硯犢犖迦犖迦犖犖犖項犢犖項犢犖犖犢犢犢犢犖ム献犖萎鍵 
犖犖犖÷犖犖巌硯犖巌硯犢犢犖犖犖犖犖犢犢 
HHuummaann--CCoommppuutteerr 
IInntteerrffaaccee [[HHCCII]] 
IITTEE 225544 bbyy 犖..犖犖犖巌鹸犖犖犖巌犖巌犖 犖犖犖巌犖巌犖萎鍵犖ム献犖橿顕犖橿顕犖犖犖項犖項 
ssiirriippoorrnntthhiittaa@@ggmmaaiill..ccoomm
Lecturer 
 犖.犖犖巌牽犖巌犖 犖犖巌犖萎献犖橿顕犖犖項 
 Education 
 B.Sc in Computer Science, Silpakorn University 
 M.Sc in Computer Management, Mahidol University 
 Ph.D. in Management Science, Silpakorn University, 2013 - now
Evaluation 
 Group Assignment 10 points 
 Individual Assignments 10 points 
 Class & Activities Attendance 10 points 
 Midterm examination 30 points 
 Final Examination 40 points 
Total 100
Evaluation
Materials 
Yvonne Rogers, Helen 
Sharp, Jenny Preece, 
Interaction Design: Beyond 
Human - Computer Interaction, 
3rd Edition, John Wiley & Sons, 
April 2011 
Shneiderman, B. and 
Plaisant, C., Designing the U 
ser Interface: Strategies for E 
ffective Human-Computer Int 
eraction:.
Todays Topics 
1. Introduction - What is Humancomputer interface ? 
2. Importance of user Interface 
3. Importance of good design 
4. Benefits of good design 
5. Good and Poor Designs 
6. The User Experience 
7. The Process of Interaction Design 
8. Assignments
Introduction 
Humancomputer interface (HCI),alternatively man 
machine interaction (MMI) or computerhuman inter 
action (CHI) is the study of interaction between peo 
ple (users) and computers.
Introduction 
With today's technology and tools, and our motivation to 
create really effective and usable interfaces and screens, 
why do we continue to produce systems that are 
inefficient and confusing or, at worst, just plain unusable? 
Is it because: 
1. We don't care? 
2. We don't possess common sense? 
3. We don't have the time? 
4. We still don't know what really makes good 
design?
Definition 
ACM 犖犖犖劇賢 the Association for Computer 
Machinery 犢犖犢犖犖巌権犖迦検 HCI 犖о犖 犖犖劇賢 犖犖犖犢犖犖о顕犖÷牽犖項犖犖朽 
犢犖犖朽犖∇硯犖犢犖犖犖犖園犖犖迦牽犖犖犖犢犖犖 犖犖迦牽犖犖犖萎犖÷犖巌犖 犢犖ム鍵 
犖犖迦牽犖犖橿顕犢犖犢犖犢犖犖犖犖犖萎犖犖犖犖÷犖巌硯犢犖犖犖犢犢犖犖犖÷元犖犖蹩巌肩犖園検犖犖園犖犢 
犖犖犖犖÷犖伍県犖∇ 犢犖ム鍵犖犖謹犖犖迦犖犖朽犖∇硯犖犖犖 犖犖犖迦犖蹩犖迦牽犖犢犖犖迦犖犢 犖犖朽 
犢犖犖朽犖∇硯犖犢犖犖 
犢犖犖∇肩犖犖伍 HCI 犖犖÷顕犖∇犖犖 犖犖迦牽犖犖謹犖犖迦犖ム鍵犖о鹸犢犖犖犖迦鍵犖犢 
犢犖犖朽犖∇硯犖犖園 犖犖犖犖巌険犖÷犖園犖犢 犖犖萎見犖о犖迦犖犖伍犖犖犖犢犖犖犖÷犖巌硯犢犖犖犖犢 
犖犖犖劇賢犖犖萎犖犖犖犖÷犖巌硯犢犖犖犖犢 犖犖園犖犖項犢犖犢犖犖迦 犢犖犖犖劇犖犖犖犢犖犖犖∇ 
犖о犖迦犖橿顕犖犖∇犖迦犢犖犖犖謹犖犖萎犖橿顕犢犖犖犢犖萎犖犖犖犖÷犖巌硯犢犖犖犖犢 犢犖犢犖犖迦 
犖犢犖迦権 犖÷犖朽牽犖萎肩犖犖巌犖巌犖迦 犢犖ム鍵犖犖犖萎肩犖犖巌犖巌犖 犢犖犖∇犖犖萎権犖伍犖犢犢犖犢
犖犖犖犢犖犖犖萎犖犖犖犖犖 
Human-Computer 
Interface-HCI
Goals of HCI 
FFuunnccttiioonnaall SSaaffee 
UUssaabbllee 
≒EEaassyy ttoo lleeaarrnn 
≒EEaassyy ttoo uussee 
犢犖犢犖迦見犖÷顕犖∇犖犖 HCI 犖犖劇賢 犖犖迦牽犖犖ム鹸犖犖犖萎犖犖犖迦牽犖犖蹩巌肩犖園検犖犖園犖犢犖犖萎見犖о犖迦犖÷犖伍県犖∇犢犖ム鍵犖犖犖÷犖巌硯犢犖犖犖犢犖犖朽犖÷元犖犖о顕犖÷犖ム賢犖犖犖園権(Safety) ,犖犖橿顕犢犖犢 
犖÷元犖犖犖萎犖∇犖犢犢犖犢犢犖犢犖犖犖巌 (Utility) ,犖÷元犖犖犖萎肩犖巌犖犖巌犖ム犖橿顕犖犖迦犢犖犢犢犖犢犖(Effectiveness), 犖÷元犖犖犖萎肩犖巌犖犖巌犖迦犢犖犢犖犖犖園犖∇顕犖犖犖犖伍犖 
犖犢犖(Efficiency) 犢犖ム鍵犖犖迦検犖迦牽犖犖犖橿顕犢犖犢犖犢犢犖犢犖犖犖巌 犖犢犖迦権犖犢犖犖犖迦牽犢犖犖朽権犖犖犖項 犢犖犖∇検犖朽犖犖萎肩犖巌犖犖巌犖迦 +犖犖犖萎肩犖巌犖犖巌犖 ( Usability)
犖犖園犖犖犖犖犖犖朽犖犖萎犖橿顕犢犖犖犖項犢犖犢犖 
犖犖÷顕犖∇犖犖 HCI 
 Understand : 犢犖犢犖迦犖犢犖犢犖犖劇犖犖犖犖巌犖о鹸犖犖∇顕 
 Develop : 犖犖園犖犖迦犖犖犖劇犖犖犖÷厳犖犢犖ム鍵犢犖犖犖犖巌 
 Achieve : 犖犖橿顕犖犖迦牽犖犖蹩巌肩犖園検犖犖園犖犢犢犖犢犖÷元犖犖犖萎肩犖犖巌犖巌犖迦
犖犖о顕犖÷肩犖橿顕犢犖犢犖犖犖犖 
UI
Why is HCI 
important? 
1. User-centered design is getting a crucial role! 
2. Users lose time with badly designed products and 
services 
3. Users even give up using bad interface
The Importance of 
the User Interface 
 A well-designed interface and screen is terribly 
important to our users. It is their window to view the cap 
abilities of the system. 
 It is also the vehicle through which many critical tasks 
are presented. These tasks often have a direct impact o 
n an organization's relations with its customers, and its 
profitability. (Facebook VS Hi5)
The Importance of the 
User Interface (Cont.) 
 A screen's layout and appearance affect a person in a 
variety of ways. If they are con-fusing and inefficient, 
people will have greater difficulty in doing their jobs and 
will make more mistakes. 
 Poor design may even chase some people away from a 
system permanently. It can also lead to aggravation, 
frustration, and increased stress.
犖犖橿顕犢犖÷犢犖犖犢犖犖朽権犖 
HCI 
 犢犖犢犖犖犢犖о犖犖橿顕犖犖園犖犖朽犖犢犖犖犖犖蹩巌犖園犖巌犖犖巌犖犖犖 
犢犖犖犢犖犖犖 
 犢犖犖迦犖犢犖犖犖項犖犖犢犖迦犢犖犖犢犖犖犖÷肩犖橿顕犖犖犖園犖犖項犢犖犢犖犖劇犖犢 
犢犖÷犢犖犢犖犖園硯犢犖犖 
 User Interface (UI) 犖犖朽犢犖÷犖犖朽犖橿顕犢犖犢犖犢犖迦犖犢 
犖犢犖迦権犢犖犖犖迦牽犖犖蹩巌犖園犖巌犖迦犢犖犖巌犖÷犖謹犖 
 犢犖犢犖犢犖犖劇犖犖犖∇顕犖犢犖犖犖迦牽犖犖犖犢犖犖 UI 犖犖朽犖犖 
犖犖迦牽犢犖犖迦犖犖犖犢犖犢犖犖犖巌犖犖犖朽犖犖橿顕犢犖犢犖∇顕犖
The Benefits of 
Good Design 
The benefits of a well designed screen have also been under 
experimental scrutiny for many years. 
 One researcher, for example, attempted to improve screen clarity 
and readability by making screens less crowded. 
 Separate items, which had been combined on the same display line 
to conserve space, were placed on separate lines instead. 
 The result screen users were about 20 percent more productive 
with the less crowded version.
Bad Designs 
Bad designs 
Elevator controls and labels on the bottom row all look 
the same, so it is easy to push a label by mistake instead 
of a control button 
People do not make same mistake for the labels and 
buttons on the top row. Why not? 
From: www.baddesigns.com
Good and bad 
design 
 What is wrong with the 
right hand remote? 
 Why is the left hand 
remote so much better 
designed? 
 Peanut shaped to fit in 
hand 
 Logical layout and color-coded, 
distinctive buttons 
 Easy to locate buttons
My Choice 
iPod 
Pros: 
 portable 
 power 
 ease of use 
Cons: 
 scratches easily 
 no speech for car use 
 proprietary
Bad designs
Bad designs
Hci week1 stamford edit
Hci week1 stamford edit
Hci week1 stamford edit
Website Performance 
Trade-offs 
 72 pixel 犖犢犢犖犖朽権犖犖犖犢犖ム犖 犖÷顕犖犖犖о犖迦犖朽 
犖犖萎犖橿顕犢犖犢犖犖迦硯犖犢犢犖犖ム犖犢犖 
 犖犖∇犖迦犖犢犢犖犖朽権犖犖犖犖犖犢犖迦犖犖÷犖犖 
 犖÷元犖о鹸犖犖朽犖朽犖犖萎犖橿顕犢犖犢犖犖項犢犖ム厳犖犖犖犖迦 Search 
Engine 犖犖朽犖謹犖犢犖ム鍵犢犖犢犖 
 犢犖犢犖犖犖迦犖犖巌犖犢犖迦権犢 
 犢犖犢犖犖朽犖÷犢犖犖巌 216 犖犖朽検犖迦犖犖犖迦 
 犢犖犢犖犖朽犖犖犢犖犢犖犢犖犢犖 犢犖犖犖犖迦牽犢犖犢犖犖劇犖 
犖犖犖犢 
 犢犖犢犖犖橿顕犖犖犖犖犖犖迦犖犖犖犖犖犖迦犖犖巌犢犖ム権 
 犖犖橿顕犖犖迦牽犖ム犖犖犖迦犖犖犖犖犖項犖犢犖犖犖犢犖о権 
Tools 犢犖犢犖 PS 
 犢犖犢犖犖朽犢犖о権犢犖犖犖迦牽犖犖橿顕犖犖朽犖犖朽犖犖謹 犢犖犢犖 IBM 
犖犖萎犖犢犖犖朽犢犖 
 犖犖萎見犖о犖迦 GIF, JPEG 犖犢犖迦犖犢犖犖犖項犢犖犢犖 
犢犖犢犖 犖犖犖劇賢犖犖伍犖÷牽犖迦権犖ム鍵犢犖犖朽権犖犢犖÷ 犖÷顕犖犖犖о牽 
犢犖犢 GIF 犖犢犖迦牽犖迦権犖ム鍵犢犖犖朽権犖犖÷顕犖犢犖犢 JPEG 
 犢犖犢犖犖朽犢犖犖 犖犖萎犖橿顕犢犖犢犖犖犖萎検犖о献犖犖ム犖犢犢犖犢犖 
犖犖謹犖 
 犢犖犢 Animated GIF 犢犖犢犖犢犖犖∇犖朽犖犖伍 
 犖犢犖迦犖犢 Animation 犖÷顕犖犢犖犖犖萎犖橿顕犢犖犢 
犢犖犖巌犖犖о顕犖÷牽犖橿顕犖犖迦 
 犖ム犖犖迦牽犢犖犢犢犖犢犖犖犖朽犢犖÷犖犖橿顕犢犖犢犖犖ム 
 犢犖犢 / 犖犖迦検犖犖ム険犖犖ム鹸犖犖犢犖犖橿顕犢犖犢犖犖迦検犖迦牽犖犢犖犢犖 
犖犖謹犢犖犢犢犖犢犖о犖謹犖 
 犢犖犢 Netmechanic.com 犢犖犖劇犖犖犖犖о 
犖犖犖犖犖犖萎肩犖巌犖犖巌犖迦 
 犢犖犢犢犖犢http://犖犖項犢犖犖巌検www.犢犖犢犢犖netmechanic.犖犖ム顕犖∇犖犖橿顕犢犖com 
犖犢犖 
犢犖犖劇犖犢犖犢犖犢犖犢犖 Cache 犢犖犢犖犖犖劇犖犖犖犖橿顕犢犖犢 
犢犖犖ム犢犖о犖謹犖
Understanding 
users needs 
 Need to take into account what people are good and 
bad at 
 Listen to what people want and get them involved 
 Use tried and tested user-centered methods
Activity 
 How does making a call differ when using 
a: 
 Cell phone 
VS 
 Public phone box? 
 Consider the kinds of user, type of activity 
and context of use
Human vs Computer 
Computers 
 Fast 
 Efficient 
 Rigid 
 finite. 
Humans 
 Slower 
 Inefficient 
 Flexible 
 expansive.
犖犢犖о犖犖犖萎犖犖犖犖橿顕犖犖園 
5 犖犖犖萎犖迦牽 
犢犖犖犖迦牽犖犖橿顕犖犖謹犖犖謹犖犖項犢犖犢 
犢犖犢犖犖犖橿顕犖犖園 
1.犖犖萎権犖萎犖о献犖迦犖犖犖迦牽犢犖犖朽権犖犖犖項 (Time to Learn) 
2.犖犖о顕犖÷牽犖о犢犖犢犖о犖犖犖迦牽犖犖犖萎検犖о献犖犖(Speed of 
Performance) 
3.犖犖園犖犖迦犖о顕犖÷犖巌犖犖ム顕犖犖犖迦犖犖迦牽犢犖犢犖犖迦(Rate of Errors) 
4.犖犖迦牽犢犖犖朽権犖犖犖項 (Retention Over Time) 
5.犖犖迦牽犖о険犖犖犖о顕犖÷犖謹犖犖犢犖犖犖犖犖犖項犢犖犢 (Subjective 
Satisfaction)
Usability 
Motivations 
 Life-critical system 
 Industrial and commercial uses 
 Home & Entertain 
 Exploratory, Creative 
 Sociotechnical system
What to design 
 Need to take into account: 
 Who the users are 
 What activities are being carried out 
 Where the interaction is taking place 
 Need to optimize the interactions users have 
with a product 
 So that they match the users activities and 
needs
Interaction 
Styles 
1. Batch interface 
2. Command-line user interface 
3. Graphical user interface 
4. Direct manipulation
Batch 
interface 
 non-interactive user interfaces 
 犖犢犖項犖犢犖犖橿顕犖犖犖犖犖迦権犖ム鍵犢犖犖朽権犖犖犖犖犖犖迦犖ム犖о犖犖犢犖迦犖犢犢犖犢 
batch processing 犢犖ム鍵犖犖園 output 犢犖÷厳犢犖犢犖犖犢犖犖犖犖巌 
犖犖迦牽犖犖犖萎検犖о献犖犖 犖犢犖犖犖 
∇犖橿顕犢犖犢犖犢犖迦権 犖犖犖萎見犖∇険犖 
∇犖犖犢犖犖犖犖犖÷顕 
犖犢犖犢犖犖朽権 
∇犢犖 
∇犖÷犢犖犖÷顕犖萎肩犖橿顕犖犖犖園 non-expert user
Command line 
user interface 
 犖犢犖犖犖 
 犖∇厳犖犖犖∇幻犢犖犢犖犢 
 expert users. 
 犖犖犖園犖犖犖伍犖犖迦牽犢犖犢 script 
犖犖犖劇賢 macros. 
 犢犖犖÷顕犖萎肩犖橿顕犖犖犖園犖犖迦牽 
犖犖蹩巌肩犖園検犖犖園犖犢犖犖園 
犖犖犖÷犖巌硯犢犖犖犖犢犖犖犢犖犖犖劇賢 
犖犢犖迦権犖犖朽犖÷元犖犖о顕犖÷犖犢犖о犖犖犖迦牽 
犖犖園犖犢犖犖犢犖犖÷献犖 
(bandwidth) 犖犖橿犖 
犢犖犢犖犖犖迦牽犢犖犢犖犖犖犖犖園犖犖萎犖犢犖犖∇犖朽犖犖項犢犖犢犖犖萎犢犖犖 
犖犖巌検犖犢犖犖橿顕犖犖園犖犖ム犢犖犖犢犖犖犖犢犖犖犖犖橿顕犖犖園犖 犢犖犖劇犖 
犖犖犖萎犖伍犖犢犖犢犢犖犖巌犖犖迦牽犖犖橿顕犖犖迦犢犖犖犖萎犖犖犖項犢犖犢犖犖 
犖犢犖犖犖犖橿顕犖犖橿顕犖犖園犖 犢犖о権犖迦犖犖犢 犢犖ム鍵犖犖犢犖犖犖犢 
犖犢犖迦犢犢犖犢犖 犖犖項犢犖犢犖犖朽犖犖橿顕犖犖迦犖犖迦牽犢犖犢犖犖萎犖 
犖犖蹩巌犖園犖巌犖迦牽 DOS
Command line 
user interface 
 犖犢犖犢犖犖朽権 
 犖犖迦牽 error 犖犖犖 
 犢犖÷犢犖犖÷顕犖萎肩犖橿顕犖犖犖園 non-expert 
user
Form Filling 
 犖犢犖犖犖 
 犖犖橿顕犢犖犢犖犖迦牽犖犖朽権犢犖犢犖犖÷弦犖ム犖犢犖 
犖犢犖迦権 
 犖犖迦検犖迦牽犖犖犖橿顕犖犖犖犖犢犖迦献犢犖о 
犖犖犢犖迦犖犢 
 犖犢犖犢犖犖朽権 
 犢犖犢犖犖劇犖犖犖朽犖犖犖犖犢犖迦犖犖÷顕犖
Menu Selection 
 犖犢犖犖犖 
 犖犖橿顕犖犖犖園犖犖項犢犖犢犖犖園犖о犖 
 犖犖謹犖犖項 expert user犖犖迦 
犖犢犖犖犖犖迦牽犖犖迦牽犢犖犖犖犢犖犖劇犖 
犖犖迦牽犢犖ム厳犖犖犖犖朽犖犖о犢犖犢犖 
 犖犖犖園犖犖犖伍犖犖迦牽犖犖橿顕犖犖о犖犖橿顕 
犖犖園犖 
 犖犢犖о権犢犖犖犖迦牽犖犖園犖犖巌犢犖 
 犖犢犖犢犖犖朽権 
 犢犖÷犖 overload
Direct 
Manipulation 
犢犖犢犖犖犖迦牽犖犖園犢犖犖迦肩犖巌犖犖犖朽 user 
犖犢犖犖犖犖迦牽犢犖ム鍵犖犖朽犢犖犖迦犖萎犖橿顕 
犢犖犖犖犖÷顕犢犖о犖犖о検犖犖犖 
犖犢犖犖犖 
∇犖犢犖犖犖迦犖犖園 
∇犢犖迦権犖犢犖犖犖迦牽犢犖犖朽権犖犖犖項 
∇肩犖迦検犖迦牽犖犖犖ム元犖犢犖ム元犢犖∇ 
Errors犢犖犢犖犢犖迦権 
∇犖犖萎犖伍犖犖犖迦牽犖犖橿顕犖犖о 
∇犖о顕犖÷犖謹犖犖犢犖犖犖項 
∇犢犖о権犖犖迦犖犢犖迦犖犖о顕犖÷犖橿顕
Direct 
Manipulation 
 犖犢犖犢犖犖朽権 
 犖∇顕犖犢犖犖犖迦牽犢犖犖朽権犖 
犢犖犖犢犖犖犖 
 犢犖÷犢犖犖÷顕犖萎犖園犖犖迦牽犢犖犖犖 
犖犖犖迦犖巌犖犖犖迦犢犖ム犖 
 犖犖迦犖犖犖園犖犖犖項犢犖犢犢犖÷犖犖犖 
犖犖迦牽犖犖橿顕犢犖犖犖 
 Expert user 犖犖迦犢犖÷ 
犖犖犖
犖犖橿顕犖∇険犖犢犖犖犖謹犖犖犖犢犖犖犢犖犢犖÷元 
犖犖犖萎肩犖巌犖犖巌犖迦 犖犖о顕犖÷犖ム賢犖犖犖園権 犖犖о顕犖 
犢犖犖劇犖犖犖劇賢 犢犖犢犖犖項犢犖犢犖犖項犖犖伍? 
HCI 犖犖園 USER 
INTERFACE
user-friendly; easy to use; 
accessible; comprehensible 
GOOD USER 
INTERFACE = 
USABILITY 犖犖迦牽犢犖犢犖犖犖萎犖∇犖犢 
犢犖犢
UUsseerr--cceenntteerreedd 
ddeessiiggnn 
 Know the users 犖犖項犖犖園犖犖項犢犖犢 
 Novice 犖犖÷険犖犖犢犖ム犖 
 Expert 犖犖項犢犖犖朽犖∇硯犖犖迦 
 Cognitive abilities 犖犖о顕犖÷肩犖迦検犖迦牽犖 
 visual & aural perception 犢犖犢犖 
犖犖園 
 physical manipulation 犖犖迦牽 
犖犖о犖犖伍検犖犢犖迦犖犖迦権 
 memory 犖犖о顕犖÷犖橿顕 
 Organizational / job abilities 犖犖迦牽 
犖犖園犖犖迦牽 犖犖迦牽犖犖橿顕犖犖迦 
 Keep users involved throughout 
project 犢犖犢犖犖項犢犖犢犖÷元犖犖о顕犖÷犖犖朽犖∇硯犖犢犖犖 
犖犖ム賢犖犖犖迦牽犖犖橿顕犖犖迦
Assignmen 
ts 
1. 犢犖ム犢犖犖犖犖園犖犢犖÷厳犖犖犖劇賢犖犖園犢犖犖劇犖犖 犖犖朽犢犖犢犖犢犖迦犖∇元犢犖犢犖犖犖園 犢犖犖∇犖÷犢犖犢 
犢犖犖朽権犖犖犖項犖犖迦牽犢犖犢犖犖迦犖犖迦犢犖犖劇犖犖犖犖犖劇賢 
犖犖項犖÷厳犖 犢犖犢犖犖犖ム賢犖犢犖犢犢犖犖犖犖園犖犢犖犖橿顕犖犖巌犖犖犢犖犢犖犖犖朽 
∇犖迦犖犖÷顕犖∇犖ム犢犖犖犖犖園犖犢犖犖犖犢犖犖犖劇犖犖犖犖朽犢犖ム犖犖園犢犖犖劇犖犖 犖犖橿顕犖犖迦牽犢犖犖犢犖犖犖朽 
犢犖犖犖犢犖犖園犖犖ム犖迦硯 犢犖犖∇犖÷犢犖犢犖犢犖犖÷弦犖ム犖朽犢犖犖犢犢犖 memory 犖犖犖犢犖犖犖劇犖犖 
∇犖犢犖犖犖項硯犢犖迦検犖 message (SMS) 犢犖犖÷犢犖犢犖迦検犖迦見犖犖劇賢犢犖÷ 
∇犖橿顕犖犖迦牽犖犢犖迦 message 犖ム犖迦肩犖伍 3 犖犖迦権犖犖迦牽犢犖犖犢犖犢犖犖犖劇犖犖 
∇犖橿顕犖犖迦牽犖犢犖 SMS 犖犢犖犖犖о顕犖 Hello I am testing the m-phone 
usability. 犢犖犖∇険犖犢犖犖犖劇犖犖犖犖朽犢犖ム犖犖園犢犖犖劇犖犖 
∇犖犖ム権犖朽犖 ringtone 犖犖犖犢犖犖犖劇犖犖 
∇犖園犖犢犖о献犖迦犖犖劇賢犖/犖犖ム幻犖 
//犢犖犖犖犖萎犖朽犢犖犖劇犖犖犖犖犖犖犖謹犖犖犖橿顕犖ム険犖犖犖犖ム賢犖犢犖犢犖犖∇弦犢 犢犖犢犖犖朽犖犖犖犖朽犢犖犢犖 
犢犖犢犖迦犖犖犖犖犖∇肩犖園犢犖犖犖犖む犖巌犖犖犖÷犖迦牽犢犖犢 犢犖犖∇犖∇顕犖∇顕犖÷犖÷犢犖犢 
犖犖о顕犖÷犢犖о権犢犖犖ム厳犖犢犖 犢 犖犖犖犖犖迦犖犖朽犖犖橿顕犢犖犢犖 犖犖橿顕犖犖迦牽犖犖園犢犖о献犖迦犖朽犢犖犢 
犢犖犖犖迦牽犖犖橿顕犢犖犢犖ム鍵犖犖∇犖迦犖犢犖迦犖犢犖 犖犖犖犖園犖犖謹犖犖о顕犖÷犖犢犖犢犖犢犖犢犖犖о顕犖
Assignmen 
ts 
2. 犢犖犢犖犖園犖犖謹犖犖迦犖ム厳犖犖犢犖о犖犢犖犖犢犖犢犖朽犖犢犖犖犖園硯犖犖∇犖迦 HCI 犖犖犖朽元犢 
犖÷顕 1 犢犖о犖犢犖犖犢 犢犖ム鍵犢犖о犖犢犖犖犢犖犢犖朽犖犢犖犖犖園硯犖犖∇犖迦 HCI 犖犢犖朽犖÷犖犖 
犖÷顕 1 犢犖о犖犢犖犖犢 犖犖犢犖犖÷犖犖園犖犖犖犢犖犖犖伍犖ム犖ム鍵犢犖犖о犖迦 
犢犖犢犢犖

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Hci week1 stamford edit

  • 1. CChhaapptteerr 11 犖犖蹩蹩巌鹸犖犖犖園険犖÷犖犖園犖園犖犖犢犢犖犖犖萎鍵犖犖о硯犢犖迦犖迦犖犖犖項犢犖項犢犖犖犢犢犢犢犖ム献犖萎鍵 犖犖犖÷犖犖巌硯犖巌硯犢犢犖犖犖犖犖犢犢 HHuummaann--CCoommppuutteerr IInntteerrffaaccee [[HHCCII]] IITTEE 225544 bbyy 犖..犖犖犖巌鹸犖犖犖巌犖巌犖 犖犖犖巌犖巌犖萎鍵犖ム献犖橿顕犖橿顕犖犖犖項犖項 ssiirriippoorrnntthhiittaa@@ggmmaaiill..ccoomm
  • 2. Lecturer 犖.犖犖巌牽犖巌犖 犖犖巌犖萎献犖橿顕犖犖項 Education B.Sc in Computer Science, Silpakorn University M.Sc in Computer Management, Mahidol University Ph.D. in Management Science, Silpakorn University, 2013 - now
  • 3. Evaluation Group Assignment 10 points Individual Assignments 10 points Class & Activities Attendance 10 points Midterm examination 30 points Final Examination 40 points Total 100
  • 5. Materials Yvonne Rogers, Helen Sharp, Jenny Preece, Interaction Design: Beyond Human - Computer Interaction, 3rd Edition, John Wiley & Sons, April 2011 Shneiderman, B. and Plaisant, C., Designing the U ser Interface: Strategies for E ffective Human-Computer Int eraction:.
  • 6. Todays Topics 1. Introduction - What is Humancomputer interface ? 2. Importance of user Interface 3. Importance of good design 4. Benefits of good design 5. Good and Poor Designs 6. The User Experience 7. The Process of Interaction Design 8. Assignments
  • 7. Introduction Humancomputer interface (HCI),alternatively man machine interaction (MMI) or computerhuman inter action (CHI) is the study of interaction between peo ple (users) and computers.
  • 8. Introduction With today's technology and tools, and our motivation to create really effective and usable interfaces and screens, why do we continue to produce systems that are inefficient and confusing or, at worst, just plain unusable? Is it because: 1. We don't care? 2. We don't possess common sense? 3. We don't have the time? 4. We still don't know what really makes good design?
  • 9. Definition ACM 犖犖犖劇賢 the Association for Computer Machinery 犢犖犢犖犖巌権犖迦検 HCI 犖о犖 犖犖劇賢 犖犖犖犢犖犖о顕犖÷牽犖項犖犖朽 犢犖犖朽犖∇硯犖犢犖犖犖犖園犖犖迦牽犖犖犖犢犖犖 犖犖迦牽犖犖犖萎犖÷犖巌犖 犢犖ム鍵 犖犖迦牽犖犖橿顕犢犖犢犖犢犖犖犖犖犖萎犖犖犖犖÷犖巌硯犢犖犖犖犢犢犖犖犖÷元犖犖蹩巌肩犖園検犖犖園犖犢 犖犖犖犖÷犖伍県犖∇ 犢犖ム鍵犖犖謹犖犖迦犖犖朽犖∇硯犖犖犖 犖犖犖迦犖蹩犖迦牽犖犢犖犖迦犖犢 犖犖朽 犢犖犖朽犖∇硯犖犢犖犖 犢犖犖∇肩犖犖伍 HCI 犖犖÷顕犖∇犖犖 犖犖迦牽犖犖謹犖犖迦犖ム鍵犖о鹸犢犖犖犖迦鍵犖犢 犢犖犖朽犖∇硯犖犖園 犖犖犖犖巌険犖÷犖園犖犢 犖犖萎見犖о犖迦犖犖伍犖犖犖犢犖犖犖÷犖巌硯犢犖犖犖犢 犖犖犖劇賢犖犖萎犖犖犖犖÷犖巌硯犢犖犖犖犢 犖犖園犖犖項犢犖犢犖犖迦 犢犖犖犖劇犖犖犖犢犖犖犖∇ 犖о犖迦犖橿顕犖犖∇犖迦犢犖犖犖謹犖犖萎犖橿顕犢犖犖犢犖萎犖犖犖犖÷犖巌硯犢犖犖犖犢 犢犖犢犖犖迦 犖犢犖迦権 犖÷犖朽牽犖萎肩犖犖巌犖巌犖迦 犢犖ム鍵犖犖犖萎肩犖犖巌犖巌犖 犢犖犖∇犖犖萎権犖伍犖犢犢犖犢
  • 11. Goals of HCI FFuunnccttiioonnaall SSaaffee UUssaabbllee ≒EEaassyy ttoo lleeaarrnn ≒EEaassyy ttoo uussee 犢犖犢犖迦見犖÷顕犖∇犖犖 HCI 犖犖劇賢 犖犖迦牽犖犖ム鹸犖犖犖萎犖犖犖迦牽犖犖蹩巌肩犖園検犖犖園犖犢犖犖萎見犖о犖迦犖÷犖伍県犖∇犢犖ム鍵犖犖犖÷犖巌硯犢犖犖犖犢犖犖朽犖÷元犖犖о顕犖÷犖ム賢犖犖犖園権(Safety) ,犖犖橿顕犢犖犢 犖÷元犖犖犖萎犖∇犖犢犢犖犢犢犖犢犖犖犖巌 (Utility) ,犖÷元犖犖犖萎肩犖巌犖犖巌犖ム犖橿顕犖犖迦犢犖犢犢犖犢犖(Effectiveness), 犖÷元犖犖犖萎肩犖巌犖犖巌犖迦犢犖犢犖犖犖園犖∇顕犖犖犖犖伍犖 犖犢犖(Efficiency) 犢犖ム鍵犖犖迦検犖迦牽犖犖犖橿顕犢犖犢犖犢犢犖犢犖犖犖巌 犖犢犖迦権犖犢犖犖犖迦牽犢犖犖朽権犖犖犖項 犢犖犖∇検犖朽犖犖萎肩犖巌犖犖巌犖迦 +犖犖犖萎肩犖巌犖犖巌犖 ( Usability)
  • 12. 犖犖園犖犖犖犖犖犖朽犖犖萎犖橿顕犢犖犖犖項犢犖犢犖 犖犖÷顕犖∇犖犖 HCI Understand : 犢犖犢犖迦犖犢犖犢犖犖劇犖犖犖犖巌犖о鹸犖犖∇顕 Develop : 犖犖園犖犖迦犖犖犖劇犖犖犖÷厳犖犢犖ム鍵犢犖犖犖犖巌 Achieve : 犖犖橿顕犖犖迦牽犖犖蹩巌肩犖園検犖犖園犖犢犢犖犢犖÷元犖犖犖萎肩犖犖巌犖巌犖迦
  • 14. Why is HCI important? 1. User-centered design is getting a crucial role! 2. Users lose time with badly designed products and services 3. Users even give up using bad interface
  • 15. The Importance of the User Interface A well-designed interface and screen is terribly important to our users. It is their window to view the cap abilities of the system. It is also the vehicle through which many critical tasks are presented. These tasks often have a direct impact o n an organization's relations with its customers, and its profitability. (Facebook VS Hi5)
  • 16. The Importance of the User Interface (Cont.) A screen's layout and appearance affect a person in a variety of ways. If they are con-fusing and inefficient, people will have greater difficulty in doing their jobs and will make more mistakes. Poor design may even chase some people away from a system permanently. It can also lead to aggravation, frustration, and increased stress.
  • 17. 犖犖橿顕犢犖÷犢犖犖犢犖犖朽権犖 HCI 犢犖犢犖犖犢犖о犖犖橿顕犖犖園犖犖朽犖犢犖犖犖犖蹩巌犖園犖巌犖犖巌犖犖犖 犢犖犖犢犖犖犖 犢犖犖迦犖犢犖犖犖項犖犖犢犖迦犢犖犖犢犖犖犖÷肩犖橿顕犖犖犖園犖犖項犢犖犢犖犖劇犖犢 犢犖÷犢犖犢犖犖園硯犢犖犖 User Interface (UI) 犖犖朽犢犖÷犖犖朽犖橿顕犢犖犢犖犢犖迦犖犢 犖犢犖迦権犢犖犖犖迦牽犖犖蹩巌犖園犖巌犖迦犢犖犖巌犖÷犖謹犖 犢犖犢犖犢犖犖劇犖犖犖∇顕犖犢犖犖犖迦牽犖犖犖犢犖犖 UI 犖犖朽犖犖 犖犖迦牽犢犖犖迦犖犖犖犢犖犢犖犖犖巌犖犖犖朽犖犖橿顕犢犖犢犖∇顕犖
  • 18. The Benefits of Good Design The benefits of a well designed screen have also been under experimental scrutiny for many years. One researcher, for example, attempted to improve screen clarity and readability by making screens less crowded. Separate items, which had been combined on the same display line to conserve space, were placed on separate lines instead. The result screen users were about 20 percent more productive with the less crowded version.
  • 19. Bad Designs Bad designs Elevator controls and labels on the bottom row all look the same, so it is easy to push a label by mistake instead of a control button People do not make same mistake for the labels and buttons on the top row. Why not? From: www.baddesigns.com
  • 20. Good and bad design What is wrong with the right hand remote? Why is the left hand remote so much better designed? Peanut shaped to fit in hand Logical layout and color-coded, distinctive buttons Easy to locate buttons
  • 21. My Choice iPod Pros: portable power ease of use Cons: scratches easily no speech for car use proprietary
  • 27. Website Performance Trade-offs 72 pixel 犖犢犢犖犖朽権犖犖犖犢犖ム犖 犖÷顕犖犖犖о犖迦犖朽 犖犖萎犖橿顕犢犖犢犖犖迦硯犖犢犢犖犖ム犖犢犖 犖犖∇犖迦犖犢犢犖犖朽権犖犖犖犖犖犢犖迦犖犖÷犖犖 犖÷元犖о鹸犖犖朽犖朽犖犖萎犖橿顕犢犖犢犖犖項犢犖ム厳犖犖犖犖迦 Search Engine 犖犖朽犖謹犖犢犖ム鍵犢犖犢犖 犢犖犢犖犖犖迦犖犖巌犖犢犖迦権犢 犢犖犢犖犖朽犖÷犢犖犖巌 216 犖犖朽検犖迦犖犖犖迦 犢犖犢犖犖朽犖犖犢犖犢犖犢犖犢犖 犢犖犖犖犖迦牽犢犖犢犖犖劇犖 犖犖犖犢 犢犖犢犖犖橿顕犖犖犖犖犖犖迦犖犖犖犖犖犖迦犖犖巌犢犖ム権 犖犖橿顕犖犖迦牽犖ム犖犖犖迦犖犖犖犖犖項犖犢犖犖犖犢犖о権 Tools 犢犖犢犖 PS 犢犖犢犖犖朽犢犖о権犢犖犖犖迦牽犖犖橿顕犖犖朽犖犖朽犖犖謹 犢犖犢犖 IBM 犖犖萎犖犢犖犖朽犢犖 犖犖萎見犖о犖迦 GIF, JPEG 犖犢犖迦犖犢犖犖犖項犢犖犢犖 犢犖犢犖 犖犖犖劇賢犖犖伍犖÷牽犖迦権犖ム鍵犢犖犖朽権犖犢犖÷ 犖÷顕犖犖犖о牽 犢犖犢 GIF 犖犢犖迦牽犖迦権犖ム鍵犢犖犖朽権犖犖÷顕犖犢犖犢 JPEG 犢犖犢犖犖朽犢犖犖 犖犖萎犖橿顕犢犖犢犖犖犖萎検犖о献犖犖ム犖犢犢犖犢犖 犖犖謹犖 犢犖犢 Animated GIF 犢犖犢犖犢犖犖∇犖朽犖犖伍 犖犢犖迦犖犢 Animation 犖÷顕犖犢犖犖犖萎犖橿顕犢犖犢 犢犖犖巌犖犖о顕犖÷牽犖橿顕犖犖迦 犖ム犖犖迦牽犢犖犢犢犖犢犖犖犖朽犢犖÷犖犖橿顕犢犖犢犖犖ム 犢犖犢 / 犖犖迦検犖犖ム険犖犖ム鹸犖犖犢犖犖橿顕犢犖犢犖犖迦検犖迦牽犖犢犖犢犖 犖犖謹犢犖犢犢犖犢犖о犖謹犖 犢犖犢 Netmechanic.com 犢犖犖劇犖犖犖犖о 犖犖犖犖犖犖萎肩犖巌犖犖巌犖迦 犢犖犢犢犖犢http://犖犖項犢犖犖巌検www.犢犖犢犢犖netmechanic.犖犖ム顕犖∇犖犖橿顕犢犖com 犖犢犖 犢犖犖劇犖犢犖犢犖犢犖犢犖 Cache 犢犖犢犖犖犖劇犖犖犖犖橿顕犢犖犢 犢犖犖ム犢犖о犖謹犖
  • 28. Understanding users needs Need to take into account what people are good and bad at Listen to what people want and get them involved Use tried and tested user-centered methods
  • 29. Activity How does making a call differ when using a: Cell phone VS Public phone box? Consider the kinds of user, type of activity and context of use
  • 30. Human vs Computer Computers Fast Efficient Rigid finite. Humans Slower Inefficient Flexible expansive.
  • 31. 犖犢犖о犖犖犖萎犖犖犖犖橿顕犖犖園 5 犖犖犖萎犖迦牽 犢犖犖犖迦牽犖犖橿顕犖犖謹犖犖謹犖犖項犢犖犢 犢犖犢犖犖犖橿顕犖犖園 1.犖犖萎権犖萎犖о献犖迦犖犖犖迦牽犢犖犖朽権犖犖犖項 (Time to Learn) 2.犖犖о顕犖÷牽犖о犢犖犢犖о犖犖犖迦牽犖犖犖萎検犖о献犖犖(Speed of Performance) 3.犖犖園犖犖迦犖о顕犖÷犖巌犖犖ム顕犖犖犖迦犖犖迦牽犢犖犢犖犖迦(Rate of Errors) 4.犖犖迦牽犢犖犖朽権犖犖犖項 (Retention Over Time) 5.犖犖迦牽犖о険犖犖犖о顕犖÷犖謹犖犖犢犖犖犖犖犖犖項犢犖犢 (Subjective Satisfaction)
  • 32. Usability Motivations Life-critical system Industrial and commercial uses Home & Entertain Exploratory, Creative Sociotechnical system
  • 33. What to design Need to take into account: Who the users are What activities are being carried out Where the interaction is taking place Need to optimize the interactions users have with a product So that they match the users activities and needs
  • 34. Interaction Styles 1. Batch interface 2. Command-line user interface 3. Graphical user interface 4. Direct manipulation
  • 35. Batch interface non-interactive user interfaces 犖犢犖項犖犢犖犖橿顕犖犖犖犖犖迦権犖ム鍵犢犖犖朽権犖犖犖犖犖犖迦犖ム犖о犖犖犢犖迦犖犢犢犖犢 batch processing 犢犖ム鍵犖犖園 output 犢犖÷厳犢犖犢犖犖犢犖犖犖犖巌 犖犖迦牽犖犖犖萎検犖о献犖犖 犖犢犖犖犖 ∇犖橿顕犢犖犢犖犢犖迦権 犖犖犖萎見犖∇険犖 ∇犖犖犢犖犖犖犖犖÷顕 犖犢犖犢犖犖朽権 ∇犢犖 ∇犖÷犢犖犖÷顕犖萎肩犖橿顕犖犖犖園 non-expert user
  • 36. Command line user interface 犖犢犖犖犖 犖∇厳犖犖犖∇幻犢犖犢犖犢 expert users. 犖犖犖園犖犖犖伍犖犖迦牽犢犖犢 script 犖犖犖劇賢 macros. 犢犖犖÷顕犖萎肩犖橿顕犖犖犖園犖犖迦牽 犖犖蹩巌肩犖園検犖犖園犖犢犖犖園 犖犖犖÷犖巌硯犢犖犖犖犢犖犖犢犖犖犖劇賢 犖犢犖迦権犖犖朽犖÷元犖犖о顕犖÷犖犢犖о犖犖犖迦牽 犖犖園犖犢犖犖犢犖犖÷献犖 (bandwidth) 犖犖橿犖 犢犖犢犖犖犖迦牽犢犖犢犖犖犖犖犖園犖犖萎犖犢犖犖∇犖朽犖犖項犢犖犢犖犖萎犢犖犖 犖犖巌検犖犢犖犖橿顕犖犖園犖犖ム犢犖犖犢犖犖犖犢犖犖犖犖橿顕犖犖園犖 犢犖犖劇犖 犖犖犖萎犖伍犖犢犖犢犢犖犖巌犖犖迦牽犖犖橿顕犖犖迦犢犖犖犖萎犖犖犖項犢犖犢犖犖 犖犢犖犖犖犖橿顕犖犖橿顕犖犖園犖 犢犖о権犖迦犖犖犢 犢犖ム鍵犖犖犢犖犖犖犢 犖犢犖迦犢犢犖犢犖 犖犖項犢犖犢犖犖朽犖犖橿顕犖犖迦犖犖迦牽犢犖犢犖犖萎犖 犖犖蹩巌犖園犖巌犖迦牽 DOS
  • 37. Command line user interface 犖犢犖犢犖犖朽権 犖犖迦牽 error 犖犖犖 犢犖÷犢犖犖÷顕犖萎肩犖橿顕犖犖犖園 non-expert user
  • 38. Form Filling 犖犢犖犖犖 犖犖橿顕犢犖犢犖犖迦牽犖犖朽権犢犖犢犖犖÷弦犖ム犖犢犖 犖犢犖迦権 犖犖迦検犖迦牽犖犖犖橿顕犖犖犖犖犢犖迦献犢犖о 犖犖犢犖迦犖犢 犖犢犖犢犖犖朽権 犢犖犢犖犖劇犖犖犖朽犖犖犖犖犢犖迦犖犖÷顕犖
  • 39. Menu Selection 犖犢犖犖犖 犖犖橿顕犖犖犖園犖犖項犢犖犢犖犖園犖о犖 犖犖謹犖犖項 expert user犖犖迦 犖犢犖犖犖犖迦牽犖犖迦牽犢犖犖犖犢犖犖劇犖 犖犖迦牽犢犖ム厳犖犖犖犖朽犖犖о犢犖犢犖 犖犖犖園犖犖犖伍犖犖迦牽犖犖橿顕犖犖о犖犖橿顕 犖犖園犖 犖犢犖о権犢犖犖犖迦牽犖犖園犖犖巌犢犖 犖犢犖犢犖犖朽権 犢犖÷犖 overload
  • 40. Direct Manipulation 犢犖犢犖犖犖迦牽犖犖園犢犖犖迦肩犖巌犖犖犖朽 user 犖犢犖犖犖犖迦牽犢犖ム鍵犖犖朽犢犖犖迦犖萎犖橿顕 犢犖犖犖犖÷顕犢犖о犖犖о検犖犖犖 犖犢犖犖犖 ∇犖犢犖犖犖迦犖犖園 ∇犢犖迦権犖犢犖犖犖迦牽犢犖犖朽権犖犖犖項 ∇肩犖迦検犖迦牽犖犖犖ム元犖犢犖ム元犢犖∇ Errors犢犖犢犖犢犖迦権 ∇犖犖萎犖伍犖犖犖迦牽犖犖橿顕犖犖о ∇犖о顕犖÷犖謹犖犖犢犖犖犖項 ∇犢犖о権犖犖迦犖犢犖迦犖犖о顕犖÷犖橿顕
  • 41. Direct Manipulation 犖犢犖犢犖犖朽権 犖∇顕犖犢犖犖犖迦牽犢犖犖朽権犖 犢犖犖犢犖犖犖 犢犖÷犢犖犖÷顕犖萎犖園犖犖迦牽犢犖犖犖 犖犖犖迦犖巌犖犖犖迦犢犖ム犖 犖犖迦犖犖犖園犖犖犖項犢犖犢犢犖÷犖犖犖 犖犖迦牽犖犖橿顕犢犖犖犖 Expert user 犖犖迦犢犖÷ 犖犖犖
  • 42. 犖犖橿顕犖∇険犖犢犖犖犖謹犖犖犖犢犖犖犢犖犢犖÷元 犖犖犖萎肩犖巌犖犖巌犖迦 犖犖о顕犖÷犖ム賢犖犖犖園権 犖犖о顕犖 犢犖犖劇犖犖犖劇賢 犢犖犢犖犖項犢犖犢犖犖項犖犖伍? HCI 犖犖園 USER INTERFACE
  • 43. user-friendly; easy to use; accessible; comprehensible GOOD USER INTERFACE = USABILITY 犖犖迦牽犢犖犢犖犖犖萎犖∇犖犢 犢犖犢
  • 44. UUsseerr--cceenntteerreedd ddeessiiggnn Know the users 犖犖項犖犖園犖犖項犢犖犢 Novice 犖犖÷険犖犖犢犖ム犖 Expert 犖犖項犢犖犖朽犖∇硯犖犖迦 Cognitive abilities 犖犖о顕犖÷肩犖迦検犖迦牽犖 visual & aural perception 犢犖犢犖 犖犖園 physical manipulation 犖犖迦牽 犖犖о犖犖伍検犖犢犖迦犖犖迦権 memory 犖犖о顕犖÷犖橿顕 Organizational / job abilities 犖犖迦牽 犖犖園犖犖迦牽 犖犖迦牽犖犖橿顕犖犖迦 Keep users involved throughout project 犢犖犢犖犖項犢犖犢犖÷元犖犖о顕犖÷犖犖朽犖∇硯犖犢犖犖 犖犖ム賢犖犖犖迦牽犖犖橿顕犖犖迦
  • 45. Assignmen ts 1. 犢犖ム犢犖犖犖犖園犖犢犖÷厳犖犖犖劇賢犖犖園犢犖犖劇犖犖 犖犖朽犢犖犢犖犢犖迦犖∇元犢犖犢犖犖犖園 犢犖犖∇犖÷犢犖犢 犢犖犖朽権犖犖犖項犖犖迦牽犢犖犢犖犖迦犖犖迦犢犖犖劇犖犖犖犖犖劇賢 犖犖項犖÷厳犖 犢犖犢犖犖犖ム賢犖犢犖犢犢犖犖犖犖園犖犢犖犖橿顕犖犖巌犖犖犢犖犢犖犖犖朽 ∇犖迦犖犖÷顕犖∇犖ム犢犖犖犖犖園犖犢犖犖犖犢犖犖犖劇犖犖犖犖朽犢犖ム犖犖園犢犖犖劇犖犖 犖犖橿顕犖犖迦牽犢犖犖犢犖犖犖朽 犢犖犖犖犢犖犖園犖犖ム犖迦硯 犢犖犖∇犖÷犢犖犢犖犢犖犖÷弦犖ム犖朽犢犖犖犢犢犖 memory 犖犖犖犢犖犖犖劇犖犖 ∇犖犢犖犖犖項硯犢犖迦検犖 message (SMS) 犢犖犖÷犢犖犢犖迦検犖迦見犖犖劇賢犢犖÷ ∇犖橿顕犖犖迦牽犖犢犖迦 message 犖ム犖迦肩犖伍 3 犖犖迦権犖犖迦牽犢犖犖犢犖犢犖犖犖劇犖犖 ∇犖橿顕犖犖迦牽犖犢犖 SMS 犖犢犖犖犖о顕犖 Hello I am testing the m-phone usability. 犢犖犖∇険犖犢犖犖犖劇犖犖犖犖朽犢犖ム犖犖園犢犖犖劇犖犖 ∇犖犖ム権犖朽犖 ringtone 犖犖犖犢犖犖犖劇犖犖 ∇犖園犖犢犖о献犖迦犖犖劇賢犖/犖犖ム幻犖 //犢犖犖犖犖萎犖朽犢犖犖劇犖犖犖犖犖犖犖謹犖犖犖橿顕犖ム険犖犖犖犖ム賢犖犢犖犢犖犖∇弦犢 犢犖犢犖犖朽犖犖犖犖朽犢犖犢犖 犢犖犢犖迦犖犖犖犖犖∇肩犖園犢犖犖犖犖む犖巌犖犖犖÷犖迦牽犢犖犢 犢犖犖∇犖∇顕犖∇顕犖÷犖÷犢犖犢 犖犖о顕犖÷犢犖о権犢犖犖ム厳犖犢犖 犢 犖犖犖犖犖迦犖犖朽犖犖橿顕犢犖犢犖 犖犖橿顕犖犖迦牽犖犖園犢犖о献犖迦犖朽犢犖犢 犢犖犖犖迦牽犖犖橿顕犢犖犢犖ム鍵犖犖∇犖迦犖犢犖迦犖犢犖 犖犖犖犖園犖犖謹犖犖о顕犖÷犖犢犖犢犖犢犖犢犖犖о顕犖
  • 46. Assignmen ts 2. 犢犖犢犖犖園犖犖謹犖犖迦犖ム厳犖犖犢犖о犖犢犖犖犢犖犢犖朽犖犢犖犖犖園硯犖犖∇犖迦 HCI 犖犖犖朽元犢 犖÷顕 1 犢犖о犖犢犖犖犢 犢犖ム鍵犢犖о犖犢犖犖犢犖犢犖朽犖犢犖犖犖園硯犖犖∇犖迦 HCI 犖犢犖朽犖÷犖犖 犖÷顕 1 犢犖о犖犢犖犖犢 犖犖犢犖犖÷犖犖園犖犖犖犢犖犖犖伍犖ム犖ム鍵犢犖犖о犖迦 犢犖犢犢犖