WHAT IS COMPUTER MEMORY


computer Memory Details 


 

Part Of A Computer In Which Data Or Program Instructions Can Be Story For Retrieval.


MEMORY SPECIFICATIONS

  • NUMBER OF PINS
  • MEMORY FREQUENCY (FSB)
  • SINGLE CHANEL AND DUAL CHANEL MEMORY

TYPES OF MEMORY

  • VOLATILE = ( Temporarily Memory  ) : It Lose The Data When Turn Off Computer    Example – Cache Memory                                                                                                          
  • NON-VOLATILE = (Permanently Memory)  long-term persistent storage Example – Hdd, Pen Drive

CLASSIFIED MEMORY

  1. PHYSICAL MEMORY
  2. FLASH MEMORY
  3. CACHE MEMORY

PHYSICAL MEMORY 

(It’s Total Amount Of Memory In The Computer And We Don’t Changed)

Physical Memory. … Alternatively Referred To As The Physical Storage Or The Real Storage, Physical Memory Is A Term Used To Describe The Total Amount Of memory Installed In The Computer.

Two Type Of Physical Memory 

  • Ram   (Random Access Memory)

 Type Ram

1.  S RAM (Static Random Access Memory)

2.  D RAM (Dynamic Random Access Memory


  •    Rom   (Read Only Memory)

 Type Of Rom

1. P ROM ( Programmable Read Only Memory)

2. EP ROM (Erasable Read Only Memory)

3. EEP ROM (Electrically Erasable  Programmable Read Only Memory)


FLASH MEMORY

Flash Memory Is The High-Density Device.

It’s Non-Volatile Memory,Fast Reading and

writing Data. Flash Memory Re-Programmable Device.

                                        


CACHE MEMORY 

(Cache Memory Is A Small And Fast Memory Which IS Placed Between The  CPU And Main Memory)

As CPU has to fetch instruction from main memory speed of CPU depending on fetching speed from main memory. CPU contains register which has fastest access but they are limited in number as well as costly. Cache is cheaper so we can access cache. Cache memory is a very high speed memory that is placed between the CPU and main memory, to operate at the speed of the CPU.

It is used to reduce the average time to access data from the Main Memory. The cache is a smaller and faster memory which stores copies of the data from frequently used main memory locations. Most CPUs have different independent caches, including instruction and data.