I have to do a simple calculator project this calculator is doing the following operation addition subtraction multiplication and division using keypad as input and lcd as output , we must use the pic 16f877A instruction and mplab, I really need your help I have to submit it on tuesday ![Confused :confused: :confused:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)