Primary and Secondary Memory in Computer. Full Explanation

 Primary and Secondary Memory in Computer
 

Computer Memory– 

Memory is capacity part in computer. It is store the information, data, programs amid handling in computer. It stores information either incidentally or changeless premise. Memory used to vital job in sparing and recovering information.

 Primary and Secondary Memory in Computer. Full Explanation

Types of Memory– Mainly computer have two types memory

 1.         Primary Memory/Volatile Memory.

2.         Secondary Memory/Non Volatile Memory.

I. Main Memory/ Primary Memor/Volatile Memory:

Primary memory is interior memory of the computer. It is otherwise called fundamental memory and Temporary memory .Primary Memory holds the information and guidance on which computer is right now working. Primary Memory is nature unstable or volatile. It implies when control is turned off it lost all information.

 Kinds of Primary Memory– Primary memory is by and large of two types.

1.         RAM

2.         ROM

1. RAM (Random Access Memory):

It remains for Random Access Memory.RAM is known as read or write memory. It by and large refereed as fundamental memory of the computer framework. It is a transitory memory. The data put away in this memory is lost as the power supply to the computer is turned off. That is the reason RAM is additionally called Volatile Memory.

Types of RAM– RAM is likewise of two kinds:

a) Static RAM:

Static RAM otherwise called SRAM ,hold put away data as long as the power supply is ON. SRAM are of higher drift and expend more power .They have higher speed than Dynamic RAM

b)Dynamic RAM:

Dynamic RAM otherwise called DRAM, its put away data in a brief span (a couple of milliseconds) despite the fact that the power supply is ON. The Dynamic RAM are less expensive and moderate speed and furthermore they devour less power.

2. ROM (Read Only Memory):

It remains for Read Only Memory. ROM is a Permanent Type memory. Its substance is not lost when control supply is turned off. Substance of ROM is chosen by the computer producer and for all time put away at the season of assembling. ROM can't be overwritten by the computer. It is likewise called "Non-Volatile Memory".

Types of ROM: ROM memory is three types names are following-

 1. PROM(Programmable Read Only Memory)- PROM chip is programmable ROM.it is PROM chips to compose information once and read many. Once chip has been modified ,the recorded data can't be changed. PROM is likewise nonvolatile memory.

2. EPROM (Erasable Programmable Read Only Memory)- EPROM chip can be customized over and over by deleting the data put away before in it. Data put away in EPROM uncovering the chip for quite a while bright light.

3. EEPROM (Electrically Erasable Programmable Read Only Memory)- The EEPROM is customized and deleted by unique electrical waves in millisecond. A solitary byte of information or the whole substance of gadget can be eradicated.

 II. Auxiliary Memory/Secondary Memory/Non Volatile Memory:

Secondary Memory is outside memory of the computer. It is otherwise called Auxiliary memory and lasting memory. It is utilized to store the distinctive projects and the data forever. Optional Memory is nature non unstable. It implies information is put away forever regardless of whether control is turned off. 

Some secondary memory are: 

1.   Floppy Disks

2.   Magnetic (Hard) Disk

3.   Magnetic Tapes

4.    Pen Drive

5.    Winchester Disk

6.    Optical Disk(CD,DVD)