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What Is Computer Memory. Types of Computer Memory

Computer Memory:-
Computer memory is the external and internal storage area that holds data and instruction during the processing of data in binary form.

Computer memory are two types primary memory and secondary memory.

Primary memory:-

Every computer comes with a certain amount of physical memory, usually referred to as a main memory or primary memory. 

It is made up of electronic circuit that's Give data as long as voltage supply is on.

Here two types of Primary memory
Ram:-

It is an internal read / write memory i.e. information can written into and read from iron and is volatile memory room it is permanent non volatile types of memory, as it is content Are Not Lost.
When power supply is switched off it contains are eaten at the time of manufacturing and cannot be altered secondary memory.

This types of memories are internal or external devices is inside or outside the computer it store programs and data permanently it is slower but cheaper floppy disk hard disk CD DVD pendrive SR.

Secondary Storage Devices:-

The secondary storage can be divided into magnetic device optical device and flash memory Magnetic tape.

Storage media for storing large volumes of data which are needed to 20 really exist and processed the tape is a plastic ribbon usually 1 by 2 inch wide beach is quoted on one side with an iron oxide material which can be magnetized that everyone itself is store in release of 52 2400 feet.

It is similar to the tape used and tape recorder expect that is of higher quality and more durable hard disc hard drives a hard disk is a magnetic disc made of metal and covered with a magnetic recording.

Surface drive is the main location where all data is stored most hard disc drives consists of screening papers of aluminium glass or ceramic data is coated with the magnetic media a single hard disk usually consists of Sarva up letters artix are used to store huge amount of data permanently.

Nowadays, there are few capacitive hard disc available in the market to store the data like 500 GB 1 TB and even weather optical disk CD ROM this kind of storage devices come under secondary storage devices.

CD ROM is the driver to access or read and optical disk here is a full details it is an advanced technology of data storage optical disk is a discrete and written by laser beam optical disc does not need to move Access on and read flashlight because a laser beam can be moved electronically click for writing data a laser beam bernstein cavities in two surface of a text to Mark bits of data to read the data laser beam scan this areas memory card or Memory Cards is a device offering and easy, fast and reliable way of storing and transferring digital files.

It was like a portable hard disk drive pendrive flash flash flash thumb drive it is Electronic non-volatile computer storage device on big data can be electricity erase and reprogram.

The size of the pendrive is 4 GB 8 GB 16 GB 64 GB and more digital versatile disc DVD super density it can store about 25 times of data than a CD and its read write speed is also very fast it was first developed by Philips and now it is commonly used for storing movies.
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