Arduino uno or due or mega?//////

i am confused between above three boards..please tell which one i should use and why..
thanking you ...

Hi, let us know your requirement and budget. Uno is the basic Arduino board which does most of the work and is cheap and others are at the more powerful which are used for high computation power and if the code is huge.

For detail info you can check, https://www.arduino.cc/en/Products/Compare.