what is memory|what is memory in computer and its types.|what is memory in computer|what is memory in computer in hindi.
An area where data is stored is called memory. This unit is very helpful for storing data in the system.
There are two types of memory
1. Primary memory
2. Secondary memory
It is the memory which is called temporarily memory. That means data or information of primary memory will be lost when the power is switch off or any the after accur.
Some example of primary memory as follows – RAM stands for (random access memory). This memory is utilize for storing data temporarily how much data it store it depends on RAM capacity which is define in terms of GB 1GB 2GB 3GB 4GB etc.
Secondary memory is the memory which stored data permanently that means when the power is switch off no information of secondary memory will be loss. It is the unique faculty of the computer system. Where user can store data as further capacity of a memory in terms of GB and TB, nowadays higher capacity is define in terms of TB. That means Tera byte. How much we increase the memory, capacity, similarity it stores data its own area,
best example of secondary unit of device is hard disk. Where you can see data are stored in huge. Nowadays in computer system all types of data are stored either it is related to security or confidential.
R.A.M stands for (random access memory) Which is used for storing data randomly or certainly as further capacity of R.A.M.? It defines all the texture task which will be applied as per it conditional mode is a first data is transferred data into R.A.M then after all logical operation perform.
RAM is also categories in two types
A.) Static RAM
B.) Dynamic RAM
It is the part of RAM, We know that RAM is temporary memory .which store the data for the time being that means whenever the power is switch off all the information of RAM will be loss. Now, we define about the Static RAM. Whenever memory is created first then data is stored is called STATIC RAM. e.g.-If you create the memory DIM a(20) as integer. Here, Memory is created 40 bytes and has inserted only 5 integer values then the memory will be occupied only 10 bytes. In case of static RAM memory might be loss.in the above example you can see30 bytes wastage in the memory.
DynamicRAM is the type of RAM which is used to create memory dynamically that means according to data requirements it create memory. This indicates about the model or form which is not waste. In this case of DINAMIC RAM will not be loss because it creates the memory as further requirement. Pointer is the best example of DINAMIC RAM where we can see how to utilize memory in appropriate method.
It is stands for (read only memory) This memory is used to store manufactural detail about the system like brand name of system, bios setup, data quarry ,boot strap loading etc.
ROM is also categorized into 4 types:-
P.R.O.M stands for programmable read only memory. This memory is helpful for store the information in the memory after developing program that why it is known as programmable read only memory it access the information as per its instruction.
(B) ) E.P.ROM:-
E.P.ROM stands for (erasable programmable read only memory). This memory is helpful for erase that particular program. Which are already written in ROM and this configuration is utility through the concept.
(C) E.E.P.ROM :-
( Electrical erasable programmable read only memory) Here, ROM data is erase with the help of electrical current that means you can remove data from the ROM through the electric current.
(Ultra violet erasable programmable read only memory) :-
This ROM is helpful for storing data after saving data of memory from ultra violet. We know that how much ultra violet ray is harmful for all the unit which belong to earth planet. System is also alert for any misshaping. Erasable programmable read only memory is helpful for neglecting ultra violet ray that’s why your system fully saved from any digester.
Types of secondary memory:-
(A) Removable disk: –
A ll the storing devices which are store data in the disk will be removed from the system of example: C.D, D.V.D, pen drive, memory card etc. All the above mention devices are used for storing data after connecting with the system and whenever task completed. It removed from the system. That’s why it is known as removable disk. \
(B) Non Removable disk-
The disk which is not removed from the system is known as Non removable disk.
The best example of Non removable is hard disk which is useful to store data and it’s connecting with system in built. That means it cannot be removed. The storing capacity of non-removable disk is very high. It term of GB and TB.
C.D stands for (compact disk). It comes in the category of removable disk. This disk capacity is 700 MB.
CD is also categorise into two parts;-
CDR Stands for( compact disc recordable )at ones the data store in CDR cannot be removed because it is worm disk. Worm means “write once read many “. CDR is also known as blank CD.
CDRW stands for (compact disk rewritable) that means data written in CDRW can be removed and rewritable again. It is the compact of write many read many CDRW as costlier than CDR because it rewritable facility.
DVD stands for (digital versatile disk). It also comes in categorise of removable disk. Where you can remove disk as and when required.
DVD is categorised into two types:-
DVDR stands for (digital versatile disk removable) but it is worm disk (write ones read many). The capacity of DVDR is 4.7GB. It stores large amount of data as compare to CD.
It stands for (Digital versatile disk rewritable ) then means if you store data in DVDRW can we remove again and rewritable, whenever it is required. The capacity of DVDRW is 4.6 or 4.7 GB. This DVD is used to store large amount of data like project report student details employ pay role etc.
The pen drive is removable storage device. This device better than optical disk because optical disk is quiver sum is convention. The data of optical disc might be lost at any digester but in case of pen drive data is safe. Pen drive is available in different type of capacity like 8 GB,16GB,32GB and 64gb etc.