Discussion Forum: Looking Inside the Computer

There are so many different types of storage and memory devices inside the computer e.g., ROM, RAM, Hard Drive. What’s the difference between storage and memory? Why is it that we need all three ROM, RAM, and Hard drive on computers? Do we need all three on your a) smart cell phone, b) Laptop, c) Tablet? What factors play an important role in determining what type of storage or memory we need for a computing device?