fundamental

                                     

Computer Memory:-

TYPE OF MEMORY

                                 There are different types of  memory available as figure shown below

Computer memory 

internal memory:-

                       There is two type of internal memory

 RAM

                ROM

RAM  Stand  for “Random Access Memory.

There is a different type of RAM size available.

 Ex:-
128 MB,   256 MB,1 GB,  2 GB etc.

RAM has a two type:- 

S RAM

 D RAM   

 S RAM stand for “Static Random Access Memory’’ DRAM stand for “dynamic Random Access Memory”

ROM Stand for “Read Only Memory

 Rom has a four type:- 

E ROM:-Erasable Programmable Read Only Memory
PROM:-  Programmable Read Only Memory 
EPROM:- Erasable Programmable Read Only Memory 
EEPROM:-Electrically Erasable Programmable Read
Only Memory
   
 External Memory:-   External memory is used to data store. It is a large data that can be done by user and store in External Memory 
It is a Very Large data Storage unit like Hard disk DVD…….
Different type of external memory available....... Like 80GB, 200GB, etc……….

 Concept of Hardware and Software 

 Hardware:- Hardware is part of computer that we can see it and touch it, it’s called “Hardware”
 Ex:-  Mouse, Keyboard. 
  
Picture of hardware
 Software:-                                                                     Softwareis part of computer that we can see it but don’t touch it , it’s called “software”
There are  basically two type of Software available. 
     System Software 
     Application Software


  System Software:-  System software design to control operating and extend  the progrecesing capabilities of computer.

Application Software:- All those software which are used to by using operating system It's called Application software.
=>A software design for user specific need is "Application Software"

Ex:-MS Office,Word, paint.

Picture of Software :-