What is Computer Data Storage?

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Computer data storage, computer memory, and often casually storage or memory refer to computer components, devices and recording media that retain digital data used for computing for some interval of time.

Computer data storage provides one of the core functions of the modern computer, that of information retention. It is one of the fundamental components of all modern computers, and coupled with a central processing unit (CPU, a processor).

In contemporary usage, memory usually refers to a form of semiconductor storage known as random access memory (RAM) and sometimes other forms of fast but temporary storage.

Similarly, storage today more commonly refers to mass storage – optical discs, forms of magnetic storage like hard disks, and other types slower than RAM, but of a more permanent nature.

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What are examples of Optical Media?

Optical media is a storage media that hold content in digital form on which information is written (encoded) and read (decoded) by using a laser device. A optical media usually is a flat, circular disc which encodes binary data (bits) on a special material , often aluminium, on one of its flat surfaces.

What units of measurement are used for data storage?

Data storage is also called storage or memory, it refers to computer components and recording media that retain digital data used for computing.

Thus, for example, documents and images are measured in bytes or kilobytes, pen drives (USB) are measured in megabytes, while hard drives are measured in terms of gigabytes or terabytes.

What is input/output or storage device?

An input/output device is also known as storage device. These computer devices preserve information for retrieval.

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