Describe three principles of direct manipulation. Give four benefits of direct m

Question

Describe three principles of direct manipulation.

Give four benefits of direct manipulation. Also, list four problems of direct manipulation.

Examining the success of video games can provide insight for interface designers. Explain what lessons can be learned by video games for interface design, but also provide examples of areas where it is ineffective to do so.

An airline company is designing a new online reservation system. They want to add some direct-manipulation features. For example, they would like customers to click a map to specify the departure cities and the destinations, and to click on the calendar to indicate their schedules. From your point of view, list four benefits and four problems of the new idea compared with their old system, which required the customer to do the job by typing

Explanation / Answer

Describe three principles of direct manipulation.

Give four benefits of direct manipulation.

Also, list four problems of direct manipulation.

Answer)

Direct manipulation is the process which lets the users to act on the objects which are displayed on the screen, and make potential use of the objects to achieve the operation intended. The actions taken are immediately seen and are visible by the user. Direct manipulation replaced the command line interfaces which used only commands to achieve operations.

The three principles of direct manipulation are:

a) Direct manipulation is based on selecting, interruption and also visible performance of the objects according to user actions.

b) Direct manipulation works by immediately displaying the action/selection, working fast and incremental

c) Direct manipulation selections using pointing action without using command line interface

The benefits of Direct manipulation are:

a) Letting the beginners learn quickly

b) Easier for the user to remember operations and concepts

c) User friendly actions

d) Users can find their actions more easily

The problems of direct manipulation are:

a) User interface may also confuse users who are not used to its operations

b) Commands can be more efficient and faster than using user interface

c) Design of the objects may mislead the users

d) Users have to know the meaning of the displayed images in the objects

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