Eddie is ordering lunch at a fast food restaurant that has the following menu.  Food: sandwiches, burgers  Drinks: coffee, milk, tea  Dessert: cake, pudding, ice-cream, pie  If Eddie chooses one item from each category, he has~\uline{~~~~~~~~~~}~different ways to order lunch. 
Overseas Competition->Knowledge Point->Counting Modules->Law of Addition and Multiplication->Principle of Multiplication Overseas Competition->Knowledge Point->Counting Modules->Permutations and Combinations->Combinations