SlideShare une entreprise Scribd logo
1  sur  14
VIRTUAL MEMORY Present by: - Aaina
CONTENTS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
VIRTUAL MEMORY ,[object Object],[object Object],[object Object],Virtual address (1) Not present (4) Page  frames (3) Page frame + x present (5) Secondary storage Page frames  CPU Logical page + x Mapper
NEED OF VIRTUAL MEMORY ,[object Object],[object Object]
IMPORTANCE OF VIRTUAL MEMORY ,[object Object],[object Object]
ADVANTAGES  OF VIRTUAL MEMORY ,[object Object],[object Object],[object Object]
DISADVANTAGES OF VIRTUAL MEMORY ,[object Object],[object Object],[object Object],[object Object]
ADDRESS SPACE AND MEMORY SPACE ,[object Object],[object Object],[object Object],[object Object]
PAGE FRAME AND HIT RATIO ,[object Object],[object Object],[object Object],[object Object],total number of hits + total number of mis
PAGE REPLACEMENT ALGORITHMS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
FIFO ,[object Object],[object Object],[object Object],[object Object],hit hit hit time page p2* p2* p3 P3* P5 p2 P3 P5 P4* P3 P2* p4 P3 p2* p4 p5* P2 p4 p5* P2 p4 p5 P2 P1* P5 p3* p1 p2* P3 P1 p2* p3 1 2 3 4 5 6 7 8 9 10 11 12 P2  p3  p2  p1  p5  p2  p4  p5  p3  p2  p5  p2
LRU ,[object Object],[object Object],time page hit hit hit hit hit p2* p2* p3 P3* P5 p2 P3* P5 P2 P3 P5* P2  P3 P5 p4* p2* P5 P4 P2 p5* p4 P2 P5 P1* p2* P5 P1 P2 p3* P1 P2 p3* 1 2 3 4 5 6 7 8 9 10 11 12 P2  p3  p2  p1  p5  p2  p4  p5  p3  p2  p5  p2
OPT ,[object Object],[object Object],hit hit hit hit hit time page hit p2 p2 p3 P2 P3 P5 P2 P3 P5 P2 P3 P5  P4 P3 p5 P4 P3 P5 P4 P3 p5 P2 P3 P5 P2 P3 P5 P2 p3 P1 P2 p3 1 2 3 4 5 6 7 8 9 10 11 12 P2  p3  p2  p1  p5  p2  p4  p5  p3  p2  p5  p2
 

Contenu connexe

Tendances

Os Swapping, Paging, Segmentation and Virtual Memory
Os Swapping, Paging, Segmentation and Virtual MemoryOs Swapping, Paging, Segmentation and Virtual Memory
Os Swapping, Paging, Segmentation and Virtual Memorysgpraju
 
Threads (operating System)
Threads (operating System)Threads (operating System)
Threads (operating System)Prakhar Maurya
 
Memory Management in OS
Memory Management in OSMemory Management in OS
Memory Management in OSKumar Pritam
 
Operating Systems: Virtual Memory
Operating Systems: Virtual MemoryOperating Systems: Virtual Memory
Operating Systems: Virtual MemoryDamian T. Gordon
 
Operating system memory management
Operating system memory managementOperating system memory management
Operating system memory managementrprajat007
 
CPU Scheduling in OS Presentation
CPU Scheduling in OS  PresentationCPU Scheduling in OS  Presentation
CPU Scheduling in OS Presentationusmankiyani1
 
Paging and Segmentation in Operating System
Paging and Segmentation in Operating SystemPaging and Segmentation in Operating System
Paging and Segmentation in Operating SystemRaj Mohan
 
Virtual memory presentation
Virtual memory presentationVirtual memory presentation
Virtual memory presentationRanjeet Kumar
 
Memory management
Memory managementMemory management
Memory managementcpjcollege
 
Memory Management in OS
Memory Management in OSMemory Management in OS
Memory Management in OSvampugani
 
cpu scheduling
cpu schedulingcpu scheduling
cpu schedulinghashim102
 

Tendances (20)

Virtual memory
Virtual memoryVirtual memory
Virtual memory
 
Demand paging
Demand pagingDemand paging
Demand paging
 
Os Swapping, Paging, Segmentation and Virtual Memory
Os Swapping, Paging, Segmentation and Virtual MemoryOs Swapping, Paging, Segmentation and Virtual Memory
Os Swapping, Paging, Segmentation and Virtual Memory
 
Virtual memory
Virtual memory Virtual memory
Virtual memory
 
Paging and segmentation
Paging and segmentationPaging and segmentation
Paging and segmentation
 
Threads (operating System)
Threads (operating System)Threads (operating System)
Threads (operating System)
 
Page replacement
Page replacementPage replacement
Page replacement
 
Memory Management in OS
Memory Management in OSMemory Management in OS
Memory Management in OS
 
Demand paging
Demand pagingDemand paging
Demand paging
 
Operating Systems: Virtual Memory
Operating Systems: Virtual MemoryOperating Systems: Virtual Memory
Operating Systems: Virtual Memory
 
Operating system memory management
Operating system memory managementOperating system memory management
Operating system memory management
 
CPU Scheduling in OS Presentation
CPU Scheduling in OS  PresentationCPU Scheduling in OS  Presentation
CPU Scheduling in OS Presentation
 
Virtual memory
Virtual memoryVirtual memory
Virtual memory
 
Paging and Segmentation in Operating System
Paging and Segmentation in Operating SystemPaging and Segmentation in Operating System
Paging and Segmentation in Operating System
 
Virtual memory presentation
Virtual memory presentationVirtual memory presentation
Virtual memory presentation
 
Memory management
Memory managementMemory management
Memory management
 
Memory Management in OS
Memory Management in OSMemory Management in OS
Memory Management in OS
 
Virtual memory
Virtual memoryVirtual memory
Virtual memory
 
cpu scheduling
cpu schedulingcpu scheduling
cpu scheduling
 
Paging.ppt
Paging.pptPaging.ppt
Paging.ppt
 

En vedette

Operating Systems - Virtual Memory
Operating Systems - Virtual MemoryOperating Systems - Virtual Memory
Operating Systems - Virtual MemoryEmery Berger
 
Chapter 9 - Virtual Memory
Chapter 9 - Virtual MemoryChapter 9 - Virtual Memory
Chapter 9 - Virtual MemoryWayne Jones Jnr
 
Operating System..!
Operating System..!Operating System..!
Operating System..!benremoz
 
Virtual memory
Virtual memoryVirtual memory
Virtual memoryvatsaanadi
 
Open source Software: pros and cons
Open source Software: pros and consOpen source Software: pros and cons
Open source Software: pros and consygpriya
 
Ch3: Operating System Structure
Ch3: Operating System StructureCh3: Operating System Structure
Ch3: Operating System StructureAhmar Hashmi
 
Page replacement
Page replacementPage replacement
Page replacementsashi799
 
Combined paging and segmentation
Combined paging and segmentationCombined paging and segmentation
Combined paging and segmentationTech_MX
 
Virtual Memory and Paging
Virtual Memory and PagingVirtual Memory and Paging
Virtual Memory and PagingEmery Berger
 
Distributed Systems
Distributed SystemsDistributed Systems
Distributed SystemsRupsee
 

En vedette (15)

VIRTUAL MEMORY
VIRTUAL MEMORYVIRTUAL MEMORY
VIRTUAL MEMORY
 
Operating Systems - Virtual Memory
Operating Systems - Virtual MemoryOperating Systems - Virtual Memory
Operating Systems - Virtual Memory
 
Chapter 9 - Virtual Memory
Chapter 9 - Virtual MemoryChapter 9 - Virtual Memory
Chapter 9 - Virtual Memory
 
Operating System..!
Operating System..!Operating System..!
Operating System..!
 
Virtual memory
Virtual memoryVirtual memory
Virtual memory
 
Open source Software: pros and cons
Open source Software: pros and consOpen source Software: pros and cons
Open source Software: pros and cons
 
Ch3: Operating System Structure
Ch3: Operating System StructureCh3: Operating System Structure
Ch3: Operating System Structure
 
Page Replacement
Page ReplacementPage Replacement
Page Replacement
 
Page replacement
Page replacementPage replacement
Page replacement
 
Combined paging and segmentation
Combined paging and segmentationCombined paging and segmentation
Combined paging and segmentation
 
virtual memory
virtual memoryvirtual memory
virtual memory
 
operating system structure
operating system structureoperating system structure
operating system structure
 
Virtual Memory and Paging
Virtual Memory and PagingVirtual Memory and Paging
Virtual Memory and Paging
 
Distributed Systems
Distributed SystemsDistributed Systems
Distributed Systems
 
Distributed Systems
Distributed SystemsDistributed Systems
Distributed Systems
 

Similaire à Virtual memory

virtualmemory-111228090333-phpapp02 (1).pdf
virtualmemory-111228090333-phpapp02 (1).pdfvirtualmemory-111228090333-phpapp02 (1).pdf
virtualmemory-111228090333-phpapp02 (1).pdfArchanaPandiyan
 
Virtual Memory in Operating System
Virtual Memory in Operating SystemVirtual Memory in Operating System
Virtual Memory in Operating SystemMeghaj Mallick
 
virtual-memory-130126022841-phpapp01.pdf
virtual-memory-130126022841-phpapp01.pdfvirtual-memory-130126022841-phpapp01.pdf
virtual-memory-130126022841-phpapp01.pdfry54321288
 
Computer architecture ppt
Computer architecture pptComputer architecture ppt
Computer architecture pptShishu
 
Virtual memory ppt
Virtual memory pptVirtual memory ppt
Virtual memory pptRITULDE
 
Chapter 09 - Virtual Memory.ppt
Chapter 09 - Virtual Memory.pptChapter 09 - Virtual Memory.ppt
Chapter 09 - Virtual Memory.pptMonirJihad1
 
virtual memory.ppt
virtual memory.pptvirtual memory.ppt
virtual memory.pptsuryansh85
 
NOV11 virtual memory.ppt
NOV11 virtual memory.pptNOV11 virtual memory.ppt
NOV11 virtual memory.pptPratikBose10
 
Unit 2chapter 2 memory mgmt complete
Unit 2chapter 2  memory mgmt completeUnit 2chapter 2  memory mgmt complete
Unit 2chapter 2 memory mgmt completeKalai Selvi
 
CSI-503 - 9. Virtual Memory
CSI-503 - 9. Virtual MemoryCSI-503 - 9. Virtual Memory
CSI-503 - 9. Virtual Memoryghayour abbas
 
Virtual Memory in Windows
Virtual Memory in Windows Virtual Memory in Windows
Virtual Memory in Windows HanzlaRafique
 
Computer architecture virtual memory
Computer architecture virtual memoryComputer architecture virtual memory
Computer architecture virtual memoryMazin Alwaaly
 
Power Point Presentation on Virtual Memory.ppt
Power Point Presentation on Virtual Memory.pptPower Point Presentation on Virtual Memory.ppt
Power Point Presentation on Virtual Memory.pptRahulRaj395610
 

Similaire à Virtual memory (20)

Virtual memory ppts
Virtual memory pptsVirtual memory ppts
Virtual memory ppts
 
virtualmemory-111228090333-phpapp02 (1).pdf
virtualmemory-111228090333-phpapp02 (1).pdfvirtualmemory-111228090333-phpapp02 (1).pdf
virtualmemory-111228090333-phpapp02 (1).pdf
 
Virtual Memory in Operating System
Virtual Memory in Operating SystemVirtual Memory in Operating System
Virtual Memory in Operating System
 
virtual-memory-130126022841-phpapp01.pdf
virtual-memory-130126022841-phpapp01.pdfvirtual-memory-130126022841-phpapp01.pdf
virtual-memory-130126022841-phpapp01.pdf
 
Computer architecture ppt
Computer architecture pptComputer architecture ppt
Computer architecture ppt
 
Virtual memory ppt
Virtual memory pptVirtual memory ppt
Virtual memory ppt
 
NOV11 virtual memory.ppt
NOV11 virtual memory.pptNOV11 virtual memory.ppt
NOV11 virtual memory.ppt
 
Chapter 09 - Virtual Memory.ppt
Chapter 09 - Virtual Memory.pptChapter 09 - Virtual Memory.ppt
Chapter 09 - Virtual Memory.ppt
 
virtual memory
virtual memoryvirtual memory
virtual memory
 
virtual memory.ppt
virtual memory.pptvirtual memory.ppt
virtual memory.ppt
 
NOV11 virtual memory.ppt
NOV11 virtual memory.pptNOV11 virtual memory.ppt
NOV11 virtual memory.ppt
 
Os unit 2
Os unit 2Os unit 2
Os unit 2
 
Mem mgt
Mem mgtMem mgt
Mem mgt
 
Unit 2chapter 2 memory mgmt complete
Unit 2chapter 2  memory mgmt completeUnit 2chapter 2  memory mgmt complete
Unit 2chapter 2 memory mgmt complete
 
CSI-503 - 9. Virtual Memory
CSI-503 - 9. Virtual MemoryCSI-503 - 9. Virtual Memory
CSI-503 - 9. Virtual Memory
 
Virtual Memory in Windows
Virtual Memory in Windows Virtual Memory in Windows
Virtual Memory in Windows
 
Computer architecture virtual memory
Computer architecture virtual memoryComputer architecture virtual memory
Computer architecture virtual memory
 
Power Point Presentation on Virtual Memory.ppt
Power Point Presentation on Virtual Memory.pptPower Point Presentation on Virtual Memory.ppt
Power Point Presentation on Virtual Memory.ppt
 
Operating System
Operating SystemOperating System
Operating System
 
virtual memory - Computer operating system
virtual memory - Computer operating systemvirtual memory - Computer operating system
virtual memory - Computer operating system
 

Plus de aaina_katyal

Plus de aaina_katyal (7)

Extreme programming
Extreme programmingExtreme programming
Extreme programming
 
Intel
IntelIntel
Intel
 
Microprocessor
MicroprocessorMicroprocessor
Microprocessor
 
Virtual memory
Virtual memoryVirtual memory
Virtual memory
 
CMS (content management system)
CMS (content management system)CMS (content management system)
CMS (content management system)
 
Report on printers
Report on printersReport on printers
Report on printers
 
Encryption_ppt
Encryption_pptEncryption_ppt
Encryption_ppt
 

Dernier

My INSURER PTE LTD - Insurtech Innovation Award 2024
My INSURER PTE LTD - Insurtech Innovation Award 2024My INSURER PTE LTD - Insurtech Innovation Award 2024
My INSURER PTE LTD - Insurtech Innovation Award 2024The Digital Insurer
 
"Federated learning: out of reach no matter how close",Oleksandr Lapshyn
"Federated learning: out of reach no matter how close",Oleksandr Lapshyn"Federated learning: out of reach no matter how close",Oleksandr Lapshyn
"Federated learning: out of reach no matter how close",Oleksandr LapshynFwdays
 
SIP trunking in Janus @ Kamailio World 2024
SIP trunking in Janus @ Kamailio World 2024SIP trunking in Janus @ Kamailio World 2024
SIP trunking in Janus @ Kamailio World 2024Lorenzo Miniero
 
Bun (KitWorks Team Study 노별마루 발표 2024.4.22)
Bun (KitWorks Team Study 노별마루 발표 2024.4.22)Bun (KitWorks Team Study 노별마루 발표 2024.4.22)
Bun (KitWorks Team Study 노별마루 발표 2024.4.22)Wonjun Hwang
 
CloudStudio User manual (basic edition):
CloudStudio User manual (basic edition):CloudStudio User manual (basic edition):
CloudStudio User manual (basic edition):comworks
 
Anypoint Exchange: It’s Not Just a Repo!
Anypoint Exchange: It’s Not Just a Repo!Anypoint Exchange: It’s Not Just a Repo!
Anypoint Exchange: It’s Not Just a Repo!Manik S Magar
 
Streamlining Python Development: A Guide to a Modern Project Setup
Streamlining Python Development: A Guide to a Modern Project SetupStreamlining Python Development: A Guide to a Modern Project Setup
Streamlining Python Development: A Guide to a Modern Project SetupFlorian Wilhelm
 
Human Factors of XR: Using Human Factors to Design XR Systems
Human Factors of XR: Using Human Factors to Design XR SystemsHuman Factors of XR: Using Human Factors to Design XR Systems
Human Factors of XR: Using Human Factors to Design XR SystemsMark Billinghurst
 
Vector Databases 101 - An introduction to the world of Vector Databases
Vector Databases 101 - An introduction to the world of Vector DatabasesVector Databases 101 - An introduction to the world of Vector Databases
Vector Databases 101 - An introduction to the world of Vector DatabasesZilliz
 
"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek Schlawack
"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek Schlawack"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek Schlawack
"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek SchlawackFwdays
 
Dev Dives: Streamline document processing with UiPath Studio Web
Dev Dives: Streamline document processing with UiPath Studio WebDev Dives: Streamline document processing with UiPath Studio Web
Dev Dives: Streamline document processing with UiPath Studio WebUiPathCommunity
 
Kotlin Multiplatform & Compose Multiplatform - Starter kit for pragmatics
Kotlin Multiplatform & Compose Multiplatform - Starter kit for pragmaticsKotlin Multiplatform & Compose Multiplatform - Starter kit for pragmatics
Kotlin Multiplatform & Compose Multiplatform - Starter kit for pragmaticscarlostorres15106
 
"LLMs for Python Engineers: Advanced Data Analysis and Semantic Kernel",Oleks...
"LLMs for Python Engineers: Advanced Data Analysis and Semantic Kernel",Oleks..."LLMs for Python Engineers: Advanced Data Analysis and Semantic Kernel",Oleks...
"LLMs for Python Engineers: Advanced Data Analysis and Semantic Kernel",Oleks...Fwdays
 
Leverage Zilliz Serverless - Up to 50X Saving for Your Vector Storage Cost
Leverage Zilliz Serverless - Up to 50X Saving for Your Vector Storage CostLeverage Zilliz Serverless - Up to 50X Saving for Your Vector Storage Cost
Leverage Zilliz Serverless - Up to 50X Saving for Your Vector Storage CostZilliz
 
Unleash Your Potential - Namagunga Girls Coding Club
Unleash Your Potential - Namagunga Girls Coding ClubUnleash Your Potential - Namagunga Girls Coding Club
Unleash Your Potential - Namagunga Girls Coding ClubKalema Edgar
 
Connect Wave/ connectwave Pitch Deck Presentation
Connect Wave/ connectwave Pitch Deck PresentationConnect Wave/ connectwave Pitch Deck Presentation
Connect Wave/ connectwave Pitch Deck PresentationSlibray Presentation
 
Search Engine Optimization SEO PDF for 2024.pdf
Search Engine Optimization SEO PDF for 2024.pdfSearch Engine Optimization SEO PDF for 2024.pdf
Search Engine Optimization SEO PDF for 2024.pdfRankYa
 
Scanning the Internet for External Cloud Exposures via SSL Certs
Scanning the Internet for External Cloud Exposures via SSL CertsScanning the Internet for External Cloud Exposures via SSL Certs
Scanning the Internet for External Cloud Exposures via SSL CertsRizwan Syed
 
WordPress Websites for Engineers: Elevate Your Brand
WordPress Websites for Engineers: Elevate Your BrandWordPress Websites for Engineers: Elevate Your Brand
WordPress Websites for Engineers: Elevate Your Brandgvaughan
 

Dernier (20)

My INSURER PTE LTD - Insurtech Innovation Award 2024
My INSURER PTE LTD - Insurtech Innovation Award 2024My INSURER PTE LTD - Insurtech Innovation Award 2024
My INSURER PTE LTD - Insurtech Innovation Award 2024
 
"Federated learning: out of reach no matter how close",Oleksandr Lapshyn
"Federated learning: out of reach no matter how close",Oleksandr Lapshyn"Federated learning: out of reach no matter how close",Oleksandr Lapshyn
"Federated learning: out of reach no matter how close",Oleksandr Lapshyn
 
SIP trunking in Janus @ Kamailio World 2024
SIP trunking in Janus @ Kamailio World 2024SIP trunking in Janus @ Kamailio World 2024
SIP trunking in Janus @ Kamailio World 2024
 
Bun (KitWorks Team Study 노별마루 발표 2024.4.22)
Bun (KitWorks Team Study 노별마루 발표 2024.4.22)Bun (KitWorks Team Study 노별마루 발표 2024.4.22)
Bun (KitWorks Team Study 노별마루 발표 2024.4.22)
 
CloudStudio User manual (basic edition):
CloudStudio User manual (basic edition):CloudStudio User manual (basic edition):
CloudStudio User manual (basic edition):
 
Anypoint Exchange: It’s Not Just a Repo!
Anypoint Exchange: It’s Not Just a Repo!Anypoint Exchange: It’s Not Just a Repo!
Anypoint Exchange: It’s Not Just a Repo!
 
Streamlining Python Development: A Guide to a Modern Project Setup
Streamlining Python Development: A Guide to a Modern Project SetupStreamlining Python Development: A Guide to a Modern Project Setup
Streamlining Python Development: A Guide to a Modern Project Setup
 
Human Factors of XR: Using Human Factors to Design XR Systems
Human Factors of XR: Using Human Factors to Design XR SystemsHuman Factors of XR: Using Human Factors to Design XR Systems
Human Factors of XR: Using Human Factors to Design XR Systems
 
Vector Databases 101 - An introduction to the world of Vector Databases
Vector Databases 101 - An introduction to the world of Vector DatabasesVector Databases 101 - An introduction to the world of Vector Databases
Vector Databases 101 - An introduction to the world of Vector Databases
 
"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek Schlawack
"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek Schlawack"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek Schlawack
"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek Schlawack
 
Dev Dives: Streamline document processing with UiPath Studio Web
Dev Dives: Streamline document processing with UiPath Studio WebDev Dives: Streamline document processing with UiPath Studio Web
Dev Dives: Streamline document processing with UiPath Studio Web
 
Kotlin Multiplatform & Compose Multiplatform - Starter kit for pragmatics
Kotlin Multiplatform & Compose Multiplatform - Starter kit for pragmaticsKotlin Multiplatform & Compose Multiplatform - Starter kit for pragmatics
Kotlin Multiplatform & Compose Multiplatform - Starter kit for pragmatics
 
"LLMs for Python Engineers: Advanced Data Analysis and Semantic Kernel",Oleks...
"LLMs for Python Engineers: Advanced Data Analysis and Semantic Kernel",Oleks..."LLMs for Python Engineers: Advanced Data Analysis and Semantic Kernel",Oleks...
"LLMs for Python Engineers: Advanced Data Analysis and Semantic Kernel",Oleks...
 
Leverage Zilliz Serverless - Up to 50X Saving for Your Vector Storage Cost
Leverage Zilliz Serverless - Up to 50X Saving for Your Vector Storage CostLeverage Zilliz Serverless - Up to 50X Saving for Your Vector Storage Cost
Leverage Zilliz Serverless - Up to 50X Saving for Your Vector Storage Cost
 
Unleash Your Potential - Namagunga Girls Coding Club
Unleash Your Potential - Namagunga Girls Coding ClubUnleash Your Potential - Namagunga Girls Coding Club
Unleash Your Potential - Namagunga Girls Coding Club
 
DMCC Future of Trade Web3 - Special Edition
DMCC Future of Trade Web3 - Special EditionDMCC Future of Trade Web3 - Special Edition
DMCC Future of Trade Web3 - Special Edition
 
Connect Wave/ connectwave Pitch Deck Presentation
Connect Wave/ connectwave Pitch Deck PresentationConnect Wave/ connectwave Pitch Deck Presentation
Connect Wave/ connectwave Pitch Deck Presentation
 
Search Engine Optimization SEO PDF for 2024.pdf
Search Engine Optimization SEO PDF for 2024.pdfSearch Engine Optimization SEO PDF for 2024.pdf
Search Engine Optimization SEO PDF for 2024.pdf
 
Scanning the Internet for External Cloud Exposures via SSL Certs
Scanning the Internet for External Cloud Exposures via SSL CertsScanning the Internet for External Cloud Exposures via SSL Certs
Scanning the Internet for External Cloud Exposures via SSL Certs
 
WordPress Websites for Engineers: Elevate Your Brand
WordPress Websites for Engineers: Elevate Your BrandWordPress Websites for Engineers: Elevate Your Brand
WordPress Websites for Engineers: Elevate Your Brand
 

Virtual memory