Skip to main content

MEMORY OF A COMPUTER - what is memory , types of memory ( IN ENGLISH )

 COMPUTER is a electronic device which accept the data , instructions as input , processed on it and display the output as per given instruction . All the data , instructions and output , these all are stored in a place in computer , which is called memory .




So dear friends , in this blog we will going to learn all about memory of a computer , its various types and uses and the devices which is used to measure the storage data .

MEMORY OF A COMPUTER :--

Memory of a computer is any physical device which is used to store information , data , instructions etc  for immidiate and instant use in a computer . The memory is devided into large number of small parts called cells or location of 8 bits . each bits have own unique address . 

Memory is primarily of two types .

1. Primary Memory 

2. Secondary Memory 

There are also a another type of memory i.e Cache memory 

We will discuss about all one by one . 



PRIMARY MEMORY :--

Primary memory are the memory which holds only those data and instructions on which computer or system is working . It has limited capacity and slow from register .generally these memories are made up of semiconductor device .

 some important points about primary memories are :- 

  • It is also known as main memory .
  • It is working memory of computer . 
  • Usually these memories are volatile .
  • It is faster than secondary memory .

Note :-  "A computer can't run without main memory" .

Primary memory can be devided into two types .

  1. RAM ( Random Access Memory )
  2. ROM ( Read Only Memory )
SECONDARY MEMORY :--

These are the memory based on magnetical and optical types , which is generally used for storing data and istructions permanentally . Secondary memory can't access by CPU directly as primary or main memory can . For accesssing the data or informations of secondary memory , first we have to transferred it to the main memory and then CPU can access . 

There are some important point for secondary memory also which are given below :-
  • It is non-volatile memory .
  • It is slower than main memory .
  • Data is  permanently stored , even when computer is switch off . 
  • Computer may run without secondary memory also .
  • It is also known as backup memory . 
Examples :- disk , CD-ROM ,DVD etc .

CACHE MEMORY :-

Cache memory is a very high speed semiconductor memory which is used to speed up the CPU . Cache memory is faster than main memory .It is used for temporary use . It store the program that executed within a short period of time .
The one disadvantage of this memory is , it has limited capacity and it is very expensive .


You can also read my other blogs as per given below :-






















Labels:

Comments

Post a Comment

Popular posts from this blog

Complete Strategy to clear TCS Xplore IPA in One Attempt Now ( 80+ Score )

  So hello Everyone , Here are the all Links from where you can Practice !  All the resources are searched from my best !  1. For KYT and Bizzskill  Link :- tcs Xplore course  2. Unix Operating system Link :-    a.  click here Link 1 b.  click here Link 2 c.  Click here Link 3   3. UI  Link :-  click here 4. SQL and Pl SQL Link : -  Click here Click here click here 5. Java MCQ  Link :-  click here click here click here 6. Java coding :-  Access the playlist on YouTube :-  click here to watch Access the blogs :-  click here All in one link :-   click here
Post a Comment
Read more

TCS IPA previous year quistion ( 35 marks ) , Quistion , Input , output

 Problem Statement Video Link :    https://youtu.be/XCBvfJAo908 Create a class TravelAgencies with below attributes: regNo – int agencyName – String pakageType – String price – int flightFacility – boolean Write getters, setters for the above attributes . Create constructor which takes parameter in the above sequence. Create class Solution with main method. Implement two static methods – findAgencyWithHighestPackagePrice and agencyDetailsforGivenIdAndType in Solution class. findAgencyWithHighestPackagePrice method: This method will take array of TravelAgencies objects as an input parameter and return the highest package price from the given array of objects. agencyDetailsForGivenldAndType method: This method will take three input parameters -array of TravelAgencies objects, int parameter regNo and String parameter packageType. The method will return the TravelAgencies object based on below conditions. FlightFacility should be available. The input parameters(regNo and packageType) shoul
Post a Comment
Read more

TCS IPA previous year problems solved [input + output ] in JAVA - (35 marks )

  Problem Statement :  Video Link :   Click Here Create a class AutonomousCar with the below attributes: carld – int brand – String   noOfTestsConducted – int noOfTestsPassed- int environment – String grade – String Write getters, setters for the above attributes . Create constructor which takes parameter in the above sequence except grade. Create class Solution with main method. Implement two static methods – findTestPassedByEnv and updateCarGrade in Solution class. findTestPassedByEnv method: This method will take two input parameters -array of AutonomousCar objects and string parameter environment. The method will return the sum of the noOfTestsPassed attribute from autonomousCar objects for the environment passed as parameter. If no autonomousCar with the given environment is present in the array of AutonomousCar objects, then the method should return 0. updateCarGrade method: This method will take a String parameter brand, along with the array of AutonomousCar objects. The method
Post a Comment
Read more