Answer:
Rotary phone:
Pros- Communication, it's rarely lost, can be used with lose of power.
Cons- It's difficult to call with, you have to memorize phone numbers, large.
Mobile phone:
Pros- Small and easy to carry, able to do more, holds phone numbers.
Cons- Made to break, unreliable, different charging for different versions.
Typewriter:
Pros- Improves mental skills, appears more formal, teaches good spelling.
Cons- Can't fix your mistakes, loud, not very portable.
Laptop:
Pros: Able to do many things, Editable, portable.
Cons: Made to break, bad for your eyes, needs frequent updates.