Outline three differences between random access memory and hard disk memory.(6 marks)June/July 2020

Random access memory (RAM) and hard disk memory are two types of computer memory that are used to store data and support the operation of a computer. There are several differences between these two types of memory:

1. Type of memory: RAM is a type of volatile memory, which means that it requires a constant power supply to retain data. Hard disk memory is a type of non-volatile memory, which means that it can retain data even when the power is turned off.
2. Speed: RAM is generally faster than hard disk memory, as it is designed to allow quick access to data. This makes it well-suited for tasks that require fast data access, such as running programs or accessing files.
3. Capacity: Hard disk memory generally has a larger capacity than RAM, as it is designed to store large amounts of data. This makes it well-suited for storing files, documents, and other types of data that need to be retained over the long term.
4. Cost: RAM is generally more expensive than hard disk memory, as it requires more advanced technology to manufacture.
5. Location: RAM is located within the computer and is an integral part of the system, while hard disk memory is typically an external device that is connected to the computer via a cable or interface.
6. Purpose: RAM is used to store data that is actively being used or accessed by the computer, while hard disk memory is used to store data that is not actively being used but needs to be retained for later use.