I have been a problem, what is a printer or some computer Think Should the computer first, then the data on the computer how to become a paper form, should the first printer, the printer to print something., there is no computer where it comes to print, so the problem has been bothering me, but I think these two must have an order of the birth of the computer in the computer class to learn, but for the printer, how do I do not rememberno, in order to solve this problem, I think or the next turn to some data look better.