Occupation
Student
White collar
Teacher
Business man
lecturer
How much is your monthly income?
Below 800
800-1500 Yuan
1500-3000 Yuan
3000-8000 Yuan
Above 8000 Yuan
Do you use the projector often?
Yes, I do
Sometimes
No, I don't
Do you have standard on the size of projecting pictures?
I want big pictures
I want small pictures
Every size is OK!
What kind of projector do you tent to used it?
fixed projector
portable projector
What do you often used projector for?
Watching movie
Having class
Playing game
Speeching
Metting
Do you think connecting computer to computer is too complicated?
When you used projector connected to computer, whether or not any problem?
Usually have problem
This situation is very few
Not any problem
Do you think the projector is too heavy?