Project Report of Electricity Billing System
Page - 13
User Interface Design
User Interface Design is concerned with the dialogue
between a user and the
computer. It is concerned with everything from starting the
system or logging into the
system to the eventually presentation of desired inputs and outputs. The overall flow of
screens and messages is called a dialogue.
The following steps are various guidelines for User Interface Design:
1.
The system user should always be aware of what to do next.
2.
The screen should be formatted so that various types of information, instructions
and messages always appear in the same general display area.
3.
Message, instructions or information should be displayed
long enough to allow
the system user to read them.
4.
Use display attributes sparingly.
5.
Default values for fields and answers to be entered
by the user should be
specified.
6.
A user should not be allowed to proceed without correcting an error.
7.
The system user should never get an operating system message or fatal error.