input bits such as here a and B and you compute a function of those two bits and that will be some new bit that I can use in subsequent computations such as here I'm taking this or if those things okay so just to give an example this above circuit on three inputs outputs one if only if at least two the inputs of one okay now the size of the complexity of this circuit is going to be like four four gates in it and so this is how we can measure computation but for finite functions so it's important here that the number of bits of input is something