BTW you don' have to switch it back to A to reset it.. just cock the body n it will reset the shutter. Put a lens cap over the lens when your time is up so the reset will not effect the image.
No, it will not reset the shutter. The shutter will remain open until the switch is set back to A, no matter what else is done. The camera will reset everything else- light baffle, mirror and diaphragm. If a lens cap is put over the lens it will keep out light while the camera is being wound, but effectively the shutter will be: the light baffle behind the mirror to open, and the lens cap to close.
I do use a digital device in my photographic pursuits when necessary.
When someone rags on me for using film, I use a middle digit, upraised.