Apple Computer Network Router 2 User Manual download pdf (Page 28)

CHAPTER 1

Newton and Its Users

1-4 Observe Basic Human Interface Principles

Make your application accessible to people around the world by including

support for worldwide capabilities in your designs from the beginning of

your development process. Take stock of the cultural and linguistic needs

and expectations of your target audiences.

Observe Basic Human Interface Principles 1

Effective software adheres to certain basic principles no matter whether it

runs on a Newton PDA, a personal computer, or a high-powered computer

workstation. These principles are based on the capabilities and processes not

of the machine but of the human operator—how people usually think, act,

and work.

Metaphors 1

Wherever possible, model the actions and objects in your program on

something from the real world. This trick especially helps inexperienced

users quickly grasp how your program works. Folders are a classic metaphor.

People ﬁle things in folders in the real world, so they immediately understand

the concept of ﬁling data items in folders on a Newton. Other common

metaphors include scrubbing to delete data, tapping buttons to make things

happen, sending and receiving things through an in box and out box, setting

dates and times on calendars and digital clocks, and homing in on information

with alphabetic index tabs. Figure 1-1 illustrates some Newton metaphors.

Metaphors suggest a use for objects and actions in the Newton interface, but

that use doesn’t deﬁne or limit the implementation of the metaphor. For

example, a paper folder has a limited storage capacity, but a folder on a

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Apple Computer Network Router 2 User Manual Page 28