STORAGE DEVICES
A storage device is any hardware capable of storing information.
There are two types of storage devices used with computers:
types of devices

A digital camera is a camera that, instead of capturing and storing photographs in chemical film such as photographic film cameras, uses digital photography to generate and store images
Element of storage of data in magnetic or optical form, constituted by a thin sheet with circular form.
hard disk A disk with a large capacity for storing computer data that is permanently inserted in the central processing unit of the computer.

The CPU is the unit where the instructions of the programs are executed and the operation of the different components of the computer is controlled. It is the heart of every computer. It is used to execute a sequence of stored instructions called "program".
Primary
The memory of the computer intervenes, since it is the space that we have available to store all the information that we present.

A ROM is that storage memory that allows only the reading of information and not its destruction, regardless of the presence or not of a source of energy that feeds it.
Memory is the device that holds, stores or stores computer data for some period of time.
Secondary
Consists of storing the information permanently until the user requires it.
Magnetic storage devices are the most common type of auxiliary storage; they use magnetism to store data.

Optical storage media is used to store data that does not need to be modified, generally used to create backups of information or to distribute commercial applications of software and videos such as movies or games.