Why does a computer not understand physical variables (real world) read from sensors?

Computers don't understand the real (physical) world.

Explanation:

Most computers only understand binary code. the reason you need sensors on your computer is to transform the object the sensor detects to understandable binary code or a string of zeros and ones.

if you have a hp laptop on the top row of your keyboard there sould be a button that says prt sc , click that then wait a second then open the paint app open the clipboard and hit paste then save as a file. hope that ^-^

1. b

2. c

3. b

4. a

5. b