What are the factors that the analyst must consider when designing an input and output screens and forms?

The analyst must consider some factors like:

1-                 It should be easy to use.

2-                 It should look attractive.

3-                 It should limit the possibility of inaccurate data which is entered.

4-                 The use of lots of different colors & fonts should be avoided.

5-                 The screen design must contain guidelines to workers.

6-                 It should allow the user to navigate from a screen to another without difficulties.

7-                 It should not be over-elaborate.