The Main Memory Unit | Computer Architecture & Organisation (CAO) - Computer Science Engineering (CSE) PDF Download
The Main Memory Unit:
It is used for storing programs and data. The memory locations of memory unit is uniquely specified by the memory address of the location. M(X) is used to indicate the location of the memory unit M with address X.
The data transfer between memory unit and CPU takes place with the help of data register DR. When CPU wants to read some information from memory unit, the information first brings to DR, and after that it goes to appropriate position.Similarly, data to be stored to memory must put into DR first, and then it is stored to appropriate location in the memory unit.
The address of the memory location that is used during memory read and memory write operations are stored in the memory register AR.
The information fetched from the memory is a operand of an instruction, then it is moved from DR to data processing unit (either to AC or MQ). If it is an operand, then it is moved to program control unit (either to IR or IBR).
Two additional registers for the temporary storage of operands and results are included in data processing units: the accumulator AC and the multiplier-quotient register MQ.
Two instructions are fetch simultaneously from M and transferred to the program control unit. The instruction that is not to be executed immediately is placed in the instruction buffer register IBR. The opcode of the other instruction is placed in the instruction register IR where it is decoded.
In the decoding phase, the control circuits generate the required control signals to perform the specified operation in the instruction.
The program counter PC is used to store the address of the next instruction to be fetched from memory.
Input Output Device :
Input devies are used to put the information into computer. With the help of input devices we can store information in memory so that CPU can use it. Program or data is read into main memory from input device or secondary storage under the control of CPU input instruction.
Output devices are used to output the information from computer. If some results are evaluated by computer and it is stored in computer, then with the help of output devices, we can present it to the user. Output data from the main memory go to output device under the control of CPU output instruction.
The document The Main Memory Unit | Computer Architecture & Organisation (CAO) - Computer Science Engineering (CSE) is a part of the Computer Science Engineering (CSE) Course Computer Architecture & Organisation (CAO).
All you need of Computer Science Engineering (CSE) at this link: Computer Science Engineering (CSE)
|
20 videos|86 docs|48 tests
|
FAQs on The Main Memory Unit - Computer Architecture & Organisation (CAO) - Computer Science Engineering (CSE)
| 1. What is the main function of the Main Memory Unit in a computer? |  |
Ans. The main function of the Main Memory Unit in a computer is to store data and instructions that are currently being executed by the CPU. It provides fast and temporary storage for both the operating system and the applications running on the computer.
| 2. How is the Main Memory Unit different from secondary storage devices? | |
Ans. The Main Memory Unit, also known as RAM (Random Access Memory), is different from secondary storage devices like hard drives or solid-state drives in terms of speed and volatility. The Main Memory Unit is much faster as it allows quick access to data, but it is volatile, meaning that its contents are lost when the computer is turned off. On the other hand, secondary storage devices are slower but offer non-volatile storage, retaining data even when the computer is powered off.
| 3. What happens when the Main Memory Unit is full? | |
Ans. When the Main Memory Unit is full and there is no more space to store new data or instructions, the computer may experience performance issues. It may slow down, freeze, or crash as it struggles to manage the limited memory resources. To overcome this, the operating system utilizes techniques like virtual memory or swapping, where data that is not actively being used is temporarily moved to secondary storage to free up space in the Main Memory Unit.
| 4. How does the Main Memory Unit interact with the CPU? | |
Ans. The Main Memory Unit interacts with the CPU through the memory bus. The CPU sends memory requests to the Main Memory Unit, specifying the address of the data or instructions it needs. The Main Memory Unit retrieves the requested data from its storage cells and sends it back to the CPU through the memory bus. This interaction happens constantly as the CPU fetches and stores data during program execution.
| 5. Can the Main Memory Unit be upgraded or expanded? | |
Ans. Yes, the Main Memory Unit can be upgraded or expanded in most computers. This is typically done by adding more RAM modules to the computer's motherboard. Upgrading the Main Memory Unit can improve the overall performance of the computer by allowing it to handle more data and instructions simultaneously. However, it is important to ensure compatibility between the new RAM modules and the computer's motherboard specifications.
Related Exams
About this Document
|
1.1K Views |
|
4.78/5 Rating |
|
Dec 22, 2024 Last updated |
Document Description: The Main Memory Unit for Computer Science Engineering (CSE) 2024 is part of Computer Architecture & Organisation (CAO) preparation.
The notes and questions for The Main Memory Unit have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about The Main Memory Unit covers topics
like and The Main Memory Unit Example, for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for The Main Memory Unit.
Introduction of The Main Memory Unit in English is available as part of our Computer Architecture & Organisation (CAO)
for Computer Science Engineering (CSE) & The Main Memory Unit in Hindi for Computer Architecture & Organisation (CAO) course.
Download more important topics related with notes, lectures and mock test series for Computer Science Engineering (CSE)
Exam by signing up for free. Computer Science Engineering (CSE): The Main Memory Unit | Computer Architecture & Organisation (CAO) - Computer Science Engineering (CSE)
Description
Full syllabus notes, lecture & questions for The Main Memory Unit | Computer Architecture & Organisation (CAO) - Computer Science Engineering (CSE) - Computer Science Engineering (CSE) | Plus excerises question with solution to help you revise complete syllabus for Computer Architecture & Organisation (CAO) | Best notes, free PDF download
Information about The Main Memory Unit
In this doc you can find the meaning of The Main Memory Unit defined & explained in the simplest way possible. Besides explaining types of
The Main Memory Unit theory, EduRev gives you an ample number of questions to practice The Main Memory Unit tests, examples and also practice Computer Science Engineering (CSE)
tests
|
20 videos|86 docs|48 tests
|
Download as PDF
|
Explore Courses for Computer Science Engineering (CSE) exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
The Main Memory Unit | Computer Architecture & Organisation (CAO) - Computer Science Engineering (CSE)
,The Main Memory Unit | Computer Architecture & Organisation (CAO) - Computer Science Engineering (CSE)
,Exam
,video lectures
,Free
,Viva Questions
,Summary
,Important questions
,The Main Memory Unit | Computer Architecture & Organisation (CAO) - Computer Science Engineering (CSE)
,past year papers
,mock tests for examination
,Previous Year Questions with Solutions
,shortcuts and tricks
,practice quizzes
,Semester Notes
,ppt
,Sample Paper
,MCQs
,Extra Questions
,study material
,Objective type Questions
;
Additional Information about The Main Memory Unit for Computer Science Engineering (CSE) Preparation
The Main Memory Unit Free PDF Download
The The Main Memory Unit is an invaluable resource that delves deep into the core of the Computer Science Engineering (CSE) exam.
These study notes are curated by experts and cover all the essential topics and concepts, making your preparation more efficient and effective.
With the help of these notes, you can grasp complex subjects quickly, revise important points easily,
and reinforce your understanding of key concepts. The study notes are presented in a concise and easy-to-understand manner,
allowing you to optimize your learning process. Whether you're looking for best-recommended books, sample papers, study material,
or toppers' notes, this PDF has got you covered. Download the The Main Memory Unit now and kickstart your journey towards success in the Computer Science Engineering (CSE) exam.
Importance of The Main Memory Unit
The importance of The Main Memory Unit cannot be overstated, especially for Computer Science Engineering (CSE) aspirants.
This document holds the key to success in the Computer Science Engineering (CSE) exam.
It offers a detailed understanding of the concept, providing invaluable insights into the topic.
By knowing the concepts well in advance, students can plan their preparation effectively.
Utilize this indispensable guide for a well-rounded preparation and achieve your desired results.
The Main Memory Unit Notes
The Main Memory Unit Notes offer in-depth insights into the specific topic to help you master it with ease.
This comprehensive document covers all aspects related to The Main Memory Unit.
It includes detailed information about the exam syllabus, recommended books, and study materials for a well-rounded preparation.
Practice papers and question papers enable you to assess your progress effectively.
Additionally, the paper analysis provides valuable tips for tackling the exam strategically.
Access to Toppers' notes gives you an edge in understanding complex concepts.
Whether you're a beginner or aiming for advanced proficiency, The Main Memory Unit Notes on EduRev are your ultimate resource for success.
The Main Memory Unit Computer Science Engineering (CSE) Questions
The "The Main Memory Unit Computer Science Engineering (CSE) Questions" guide is a valuable resource for all aspiring students preparing for the
Computer Science Engineering (CSE) exam. It focuses on providing a wide range of practice questions to help students gauge
their understanding of the exam topics. These questions cover the entire syllabus, ensuring comprehensive preparation.
The guide includes previous years' question papers for students to familiarize themselves with the exam's format and difficulty level.
Additionally, it offers subject-specific question banks, allowing students to focus on weak areas and improve their performance.
Study The Main Memory Unit on the App
Students of Computer Science Engineering (CSE) can study The Main Memory Unit alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the The Main Memory Unit,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of The Main Memory Unit is prepared as per the latest Computer Science Engineering (CSE) syllabus.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup