Answer:
Pros of computer- It is faster to type, you don't need an eraser, takes up less space, better for the environment.
Cons of computer- It is more difficult to memorize something that you haven't written down, computers break or sometimes don't have enough charge.
Pros of pencil and paper- It is easier to remember something that you've physically written down, physical notes can be organized better than ones on a computer.
Cons of pencil and paper- Takes up more space, your hand can hurt after writing for a long time, takes a longer time than typing.