date format form

[VASSILY]

Hello. I would like to know how can I implement a format for introducing dates easier than the one I am using by now. The one that I am using now is in the first picture where I have to type the numbers for the day, the month and the year (first uploaded picture).

The one I would like to use and I do not know how, is that where you chose the date from a calendar just tipping in the wright date (2nd. uploaded picture).

I know it must be something extremely easy but I just don´t know how to get to it.

Thank you all.