Hi Dilshan

First install the application and have an idea creating a survey and some questions.

what do you expect from these "Implementation in statistics / data entry / printable survey / response browsing / response editing & RemoteControl"

 See how it is implemeted statistics / data entry / printable survey / response browsing / response editing & RemoteControl for existing question types. You are expected to provide something similar for File Upload stuff.
 
please send me referrals where i can find more details about those....

http://docs.limesurvey.org/tiki-index.php?page=LimeSurvey+1.x+Development+Documentation&structure=LimeSurvey+Development


Harsha