Does a computer mouse store or transmit the ‘images’ it takes?

Question

Does a computer mouse temporarily store or send to a computer the images it takes when tracking its movements? Or does it just send updated coordinates to the computer and the images are temporary and overwritten with each movement?

I am asking to make sure any information like text under a mouse couldn’t be captured by it and retrieved from the mouse or connected computer.

Thanks!

Edit: does the mouse have RAM in the DSP or somewhere else that hold the previous Image data in to compare the next, which then does that get overwritten with the next image data to compute?

Answer 1

Mouse send to computer number of "ticks" for X and Y coordinates (related to mouse) for particular time. No picture or anything from your fantasies is involved. And mouse work by getting impulses from sensor which "see" the change of contrast of the surface below.