sorry for the inadequate info.
i was trying to keep it simple but that failed.
in the examples provided by arduino i saw that it as a library for that particular function, for instance like the stepper motor.
Would i need to find something similar to be able to run the LCD and Fans.
also to help clarify on what i am trying to do is, being able to regulate a tempuratuer using the LM35, 4 fans, and an LCD dispaly.
lets say if the temp is at 80F then the fans will be at idle of about 500-600 rpm and if temp is at 100F then it increases, utill the temp is back at 80F
so i would use digitalWrite(somevalue) in order for it used as an output from the two orange blocks.
Thanks for the help. 