In article , Carlos E.R.
wrote:

yes, you obviously dont know much about electronics down to that level.
Itls digital remmeber either a 1 or a 0 unlike film.

That's correct.

actually, it isn't correct. silver halide crystals on film are 0 or 1.
sensors in cameras are not.

Each memory position, corresponding to a pixel, has to
be read, its value added to the new value from the sensor or other
memory map, then written back to the memory, or to another memory map.
The CPU has to intervene.

and with film, the addition is done when light hits it a second time.