Feedback principle
The system should prompt or feedback what the current system is doing and what happened to the user in a reasonable time and in a correct way.
Metaphorical principle
The system should use familiar sentences, short sentences, and symbols to express meaning. Follow the real world’s cognition and habits to make the presentation of information more natural and easy to identify and accept.
Return principle
Users often accidentally operate errors, and they need a simple function to quickly restore the program to the state before the error occurs.
Consistent principle
For users in design, for users, the same text, status, and buttons should trigger the same thing and follow the common platform practice
Principles
The system should avoid errors.
Memory principle
Let the relevant information of the system be displayed when needed to reduce the burden on the user’s memory.
Flexible and easy to use principles
Among the users of the system, intermediate users are often the most, and there are relatively few junior and senior users. The system should be designed for most people, and at the same time take into account the needs of a few people, so as to be flexible and easy to use.
Simple upgrade principle
The dialogue should not include unrelated or unnecessary information; adding or strengthening some information means weakening other information.
Fault tolerance principle
Help principle
For a well -designed system, users often do not need to use training to use it easily, but it is necessary to provide help documents. Help information should be easy to retrieve, guiding users to solve problems through clear steps, and not too complicated.
Metaphorical principle
The system should use familiar sentences, short sentences, and symbols to express meaning. Follow the real world’s cognition and habits to make the presentation of information more natural and easy to identify and accept.
The dialogue should not include unrelated or unnecessary information; adding or strengthening some information means weakening other information.
