1.what is the benefit of using negative numbers in timer registers? 2.in start up condition whether the ports will be programed as input or output? 3.in the parallel port window what is the exact need for using P1: and pins: checks box
1.what is the benefit of using negative numbers in timer registers? That your code works
2.in start up condition whether the ports will be programed as input or output? not 'programmed' but assigned the reset value
unless you plan a career in designing microprocessor chips the above quesations are irrelevant.