#Computer Memory

Computer memory is very important part of it. it is also called physical Memory. it is used as a internal storage and perform operations. as i earlier said that computers are the machine which are very similar to human being . computer has memory , human being has also memory , computer has two types of memory , human being has also two types of memory .
Memory in hindi(याददाश्त , स्मरणशक्ति ). 

Primary Memory-(Internal to the CPU)

RAM -------------------------------ROM

or types

Volatile                             PROM, EPROM, EEPROM

or

Temporary

or

Semiconductor

or

Main

or

Read & write

whatever program we open it will always open in RAM and our Computer

Speed is also Depend on RAM. if Voltage of Data loss, that's why it called

Volatile, and with RAM your Computer Can not Provide Display so it is Main

also , in this You can read and write also, so it is called Read and Write etc.

RAM in Spirituality -

World can not survive without God RAM , so it is little Computer.

In Technology - Without RAM your device can not provide Display,.(that's the power of RAM).

Secondary Memory(External to the CPU)

or

Permanent

or

Non volatile

it is of  two types.

Sequential                   Direct Access

(Magnetic Tape)        Magnetic & Optical

                                  (Hard Disk,Floppy)(CD, DVD)

NOTE

DDR-1, DDR-2 , DDR-3 RAM's are available in the Market.

Cache Memory- it is placed between CPU and RAM.

CD-Compact Disk, (700MB).

 DVD-Digital Video Disk -(4.7 GB) .

 Floppy-1.44MB

Now a Days Hard Disk is available 40GB to 1 TB and More.