Random Access Memory
RAM is used as the “working memory” of a computer; for example, it stores information such as the text and formatting of a document you are editing. RAM is a method of short-term storage- however, RAM Disks can be made which are able to be used as long-term storage devices.
Read Only Memory
Read only memory is computer memory where the data has already been pre recorded. The ROM memory stays there even when the computer is turned off. There are different types of ROM. There are programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory.