we have a test after the high scool with points ,so when the paper goes into the computer the computer knows the right answers and can find how many points you have reached how is this done or what the paper have so pc can know the right answer
Responses (2)
I suppose it was a multiple choice test where you had to blacken the right number on an answer sheet. Is that correct ? If so, I would say the sheet with the answer sheet is scanned and you get an image with a certain arrangement of dots. This image is compared to the image of the right answers. I am not an expert but I think this is basically how it works.