What are computer storage devices
Computers can collect and sort data and create documents, but the end result needs to be stored, if not printed and used immediately. Data and document storage needs to be stored on one of several available storage devices for later retrieval, printing, changing or manipulating. The computer's internal RAM (random access memory) stores and runs application programs and work that is currently in use, such as a letter that is being typed. But RAM memory contents are lost when the computer is turned off.
RAM (Random access memory)
ROM (Read Only Memory)
Read-only memory (ROM) is a class of storage medium used in computers and other electronic devices. Data stored in ROM cannot be modified, or can be modified only slowly or with difficulty, so it is mainly used to distribute firmware (software that is very closely tied to specific hardware, and unlikely to need frequent updates).