Who formulated the six "ground rules" to be considered in designi

SOLUTION

Graphic software

The graphic software is the collection of programs written to make it convenient for a user to operate the computer graphic system.

It includes programs to generate images on the CRT screen, to manipulate the images and to accomplish various types of interaction between the user and the system.

Newman and Sproull list six “ground rules” that should be considered in designing graphic software.

1. Simplicity: The graphic software should be easy to use.
2. Consistency: The package should operate in a consistent and predictable way to the user.
3. Completeness: There should be no inconvenient ommissions in the set of graphic functions.
4. Robustness: The graphic function should be tolerant of minor instances of misuse by the operator.
5. Performance: Within limitations imposed by the system hardware, the performance should be exploited as much as possible by the software. Graphic programs should be efficient and speed of response should be fast and consistent.
6. Economy: Graphics programme should not be so large or expensive as to make their use prohibitive.