How to Install Prolog

First of all..

You must download SWI-Prolog.

http://swi-prolog.org

or

http://si.its.ac.id/apps/e-learning/course

or

other

Its up to you:

Now, you have SWI-Prolog Installer. 

Double click this installer.

Then, your PC appear process for install.

Wait a minute...

For the last, browse and choose your destination for this aplication i.e. /C

Click OK

Now, you've SWI-Prolog aplication