Human Computer Human Computer InteractionInteraction

HCIHCI

In the last 20 years, the introduction of In the last 20 years, the introduction of the graphical user interface (GUI) has the graphical user interface (GUI) has revolutionised the ways in which revolutionised the ways in which users interact with computers, known users interact with computers, known as human computer interaction (HCI).as human computer interaction (HCI).

After completing this unit, you should After completing this unit, you should be able to achieve these outcomes:be able to achieve these outcomes:

Know about the impact of HCI on society, Know about the impact of HCI on society, economy and culture. economy and culture.

Understand the fundamental principles of interface Understand the fundamental principles of interface designdesign

Be able to design and produce simple interactive Be able to design and produce simple interactive computer input and output based on HCI computer input and output based on HCI principlesprinciples

Be able to compare and contrast, using HCI Be able to compare and contrast, using HCI principles, the effectiveness of different designs principles, the effectiveness of different designs of input and output. of input and output.

DevelopmentDevelopment

Probably the most recognised graphical Probably the most recognised graphical user interface (GUI) is that used on PCs user interface (GUI) is that used on PCs (personal computer)(personal computer)

Microsoft Windows was based on the Microsoft Windows was based on the earlier Macintosh model. earlier Macintosh model.

Windows version was introduced in the Windows version was introduced in the mid-1980s. mid-1980s.

Historically, early HCI designs were Historically, early HCI designs were restricted by the hardware. Users were restricted by the hardware. Users were required to type in lengthy code into the required to type in lengthy code into the computer just to log in. computer just to log in.

Commodore 64 in the mid 80s, BBC B Commodore 64 in the mid 80s, BBC B Micro and Amstrad, all competing for the Micro and Amstrad, all competing for the market share during the 1980s. market share during the 1980s.

C:\ prompt with operating systems such as C:\ prompt with operating systems such as MS DOSMS DOS

Command Line EditorCommand Line Editor

DOS, operating system – C:\ prompt DOS, operating system – C:\ prompt would appear on the screen, the user would appear on the screen, the user could create a structure such as copying, could create a structure such as copying, renaming and moving files (my computer)renaming and moving files (my computer)

However with CLE, typed text was ignored However with CLE, typed text was ignored until the Return key was hit; then the until the Return key was hit; then the computer interpreted the command and a computer interpreted the command and a response appeared on the screen (or not!)response appeared on the screen (or not!)

Early designsEarly designsUS graduate Ivan Sutherland developed a US graduate Ivan Sutherland developed a

program called the Sketchpad, which was program called the Sketchpad, which was inspired by research into how humans inspired by research into how humans learn. learn.

Developments at Xerox WIMP model Developments at Xerox WIMP model became available in the early 1980s.became available in the early 1980s.

WIMP-windows, icons, menus and pointers.WIMP-windows, icons, menus and pointers.

AppleApple In 1984 the Macintosh computer appearedIn 1984 the Macintosh computer appeared

GUIs in the form of a computerised desktop, GUIs in the form of a computerised desktop, icons that were images, files, rubbish bin icons that were images, files, rubbish bin with the addition of a mouse, enabling the with the addition of a mouse, enabling the user to locate documents and put them in user to locate documents and put them in the bin and click on them to open them . the bin and click on them to open them .

This desktop design has truly influenced This desktop design has truly influenced how users interact with computers todayhow users interact with computers today

Research Task – Key PlayersResearch Task – Key Players

Group A – Alan Key Group A – Alan Key Group B – Bill GatesGroup B – Bill GatesGroup C – Steve Jobs/Steve WozniakGroup C – Steve Jobs/Steve WozniakResearch the above and as a group Research the above and as a group

prepare notes/presentation to present to prepare notes/presentation to present to class on whiteboard. class on whiteboard.

30 minutes – for research and prep, 5 30 minutes – for research and prep, 5 mins presentationmins presentation