About This Chapter
Memory Management & Operating Systems - Chapter Summary
If you need help studying the basics of memory management and operating systems, you've reached the right place! This informative chapter can quickly get you up to speed with memory partitioning, virtual and cache memory, page replacement, memory segmentation and much more. Explore engaging lessons developed by top instructors to improve your knowledge of these topics, and take the quizzes that follow to check your comprehension. Any questions you develop during your studies can be submitted to our experts via the Dashboard. Enjoy 24/7 access to these resources using any computer, smartphone or tablet. Upon completion of this chapter, you will be ready to:
- Outline the functions and characteristics of computer memory and processing devices
- Explain how computers store data
- Describe how a computer's operating system manages memory
- Define and describe the linear memory model
- Discuss the uses of memory allocation schemes
- Differentiate between paged memory allocation and memory deallocation
- Share the definition of an access violation error
- Provide an example of memory management (MEM) coding
1. Computer Memory and Processing Devices: Functions & Characteristics
Have you ever wondered how your computer operates - specifically, where it stores all the information it needs to run? This lesson will answer that question by explaining the general functions of the central processing unit (CPU), random-access memory (RAM) and read-only memory (ROM).
2. How Do Computers Store Data? - Memory & Function
This lesson covers the basics of the computer memory function, including how data is stored and used in computers. Different types of memory, from ROM and RAM to cache and virtual memory, will be covered.
3. What Is Memory Management? - Requirements, Errors & Techniques
This lesson will help you understand how your computer's operating system manages memory including memory for the work you are actually doing as well as saving and storage of files. The lesson also covers some typical errors messages that sometimes appear related to memory management and some techniques for resolving those errors.
4. What Is Virtual Memory? - Definition, Settings & Management
This lesson will help you understand your computer's virtual memory. You will learn the definition of virtual memory, why this technology is important, and how you can manage it on your computer.
5. Cache Memory: Definition & Concept
Cache memory is a type of memory used to hold frequently used data. Cache memory is relatively small, but very fast. Most web browsers use a cache to load regularly viewed webpages fast. The most important type of cache memory is the CPU cache.
6. What is the Linear Memory Model? - Definition & Constraints
This lesson explains a simple linear memory model and describes how memory addressing takes place. You will also understand various constraints of a linear memory model.
7. What is Memory Partitioning? - Definition & Concept
In this lesson we will understand the definition and concept of memory partitioning. We will examine the different type of memory partitions. We will highlight the pros and cons of each type and how some memory configurations solve the short comings of others.
8. Memory Allocation Schemes: Definition & Uses
Ever wondered what memory in a computer does? In this lesson we explore how the operating system manages memory and differences between best and first fit allocation schemes.
9. Paged Memory Allocation: Definition, Purpose & Structure
In this lesson we will discuss the concept of paged memory allocation. This technique is used by operating systems to share memory among their many executing tasks. We will outline memory paging, internal fragmentation and demand page memory allocation. We will finally discuss how the OS keeps track of pages in memory using page tables.
10. Memory Deallocation: Definition & Purpose
This lesson explains what deallocation of memory is and describes why memory deallocation is necessary. It also describes how memory deallocation is done by the Operating System (OS).
11. Page Replacement: Definition & Algorithms
This lesson will introduce you to the concept of page replacement, which is used in memory management. You will understand the definition and the algorithms related to page replacement. We will also discuss briefly their relative usefulness.
12. What is an Access Violation Error?
In this lesson, we will define an Access Violation Error (AVE). We will learn how the error occurs, different types of AVEs and the methods for correcting them.
13. Memory Segmentation: Definition & Purpose
In this lesson we will learn and understand the definition and concepts in memory segmentation. We will examine the processes entailed and understand the purposes of this type of memory management.
14. Memory Management (MEM) Coding: Analysis & Example
In this lesson, you will gain insights to operating system memory management. You will learn how to spot sections of code that handle the various tasks involved with memory management.
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