Module 3: Operating
... • Memory is a large array of words or bytes, each with its own address. It is a repository of quickly accessible data shared by the CPU and I/O devices. • Main memory is a volatile storage device. It loses its contents in the case of system failure. • The operating system is responsible for the foll ...
... • Memory is a large array of words or bytes, each with its own address. It is a repository of quickly accessible data shared by the CPU and I/O devices. • Main memory is a volatile storage device. It loses its contents in the case of system failure. • The operating system is responsible for the foll ...
Introduction and History
... hides the complexity and limitations of hardware (hardware interface) and creates a simpler, more powerful abstraction (OS interface). ...
... hides the complexity and limitations of hardware (hardware interface) and creates a simpler, more powerful abstraction (OS interface). ...
CS 111
... do we go about getting this "Print 111" program loaded on the computer so that when the machine turns on, this code will be run? We could put the program in the BIOS, a region of stable memory that is read-only. That could make sense, because when the computer turns on it is hardwired to immediately ...
... do we go about getting this "Print 111" program loaded on the computer so that when the machine turns on, this code will be run? We could put the program in the BIOS, a region of stable memory that is read-only. That could make sense, because when the computer turns on it is hardwired to immediately ...
PDF
... Minimal services Usually threads or processes, address space, and inter-process-communication (IPC) User-space filesystem, network, graphics, even device drivers sometimes ...
... Minimal services Usually threads or processes, address space, and inter-process-communication (IPC) User-space filesystem, network, graphics, even device drivers sometimes ...
01-ch1_introduction_minor changes - pnu-cs-os
... Multiprocessor systems can cost less than equivalent multiple singleprocessor systems, because they can share peripherals, mass storage, and power supplies. ...
... Multiprocessor systems can cost less than equivalent multiple singleprocessor systems, because they can share peripherals, mass storage, and power supplies. ...
PPT
... temporarily while it is being transferred), caching (storing parts of data in faster storage for performance), spooling (the overlapping of output of one job with input of other jobs) ...
... temporarily while it is being transferred), caching (storing parts of data in faster storage for performance), spooling (the overlapping of output of one job with input of other jobs) ...
Lecture 11 Operating Systems • Free - VU LMS
... simultaneously. That’s when the need for OS’es arose for: – Managing the resources of the computers efficiently – Making use of computers convenient for users/programmers ...
... simultaneously. That’s when the need for OS’es arose for: – Managing the resources of the computers efficiently – Making use of computers convenient for users/programmers ...
Slides
... • Most modern operating systems implement kernel modules – Uses object-oriented approach – Each core component is separate – Each talks to the others over known interfaces – Each is loadable as needed within the kernel • Overall, similar to layers but more flexible ...
... • Most modern operating systems implement kernel modules – Uses object-oriented approach – Each core component is separate – Each talks to the others over known interfaces – Each is loadable as needed within the kernel • Overall, similar to layers but more flexible ...
operating system
... in parallel instead of serially. The operating systems required for this are more complex than those that support single CPUs. ...
... in parallel instead of serially. The operating systems required for this are more complex than those that support single CPUs. ...
COS 318: Operating Systems OS Structures and System Calls Andy Bavier
... Inefficient (boundary crossings) Insufficient protection Inconvenient to share data between kernel and services ...
... Inefficient (boundary crossings) Insufficient protection Inconvenient to share data between kernel and services ...
資工系網媒所NEWS實驗室
... Process needs resources to accomplish its task CPU, memory, I/O, files Initialization data ...
... Process needs resources to accomplish its task CPU, memory, I/O, files Initialization data ...
Chapter 8 Operating Systems and Utility Programs
... • An unusual sound or music plays randomly • The available memory is less than what should be ...
... • An unusual sound or music plays randomly • The available memory is less than what should be ...
CS111—Operating System Principles
... processes’ addresses. Also, a process has no way of touching the code or data under the operating system. The operating system uses physical addresses directly, and involves no translation. Details of the translation tables are deferred to a later lecture. ...
... processes’ addresses. Also, a process has no way of touching the code or data under the operating system. The operating system uses physical addresses directly, and involves no translation. Details of the translation tables are deferred to a later lecture. ...
Computer Hardware Powerpoint
... Central Processing Unit (CPU) is responsible for the execution of computer programs. The CPU is equivalent to a human brain in that the human brain is our Central Processing Unit, responsible for the execution of our body’s functions. A heat sink (made of metal fins) and fan sit over the CPU to draw ...
... Central Processing Unit (CPU) is responsible for the execution of computer programs. The CPU is equivalent to a human brain in that the human brain is our Central Processing Unit, responsible for the execution of our body’s functions. A heat sink (made of metal fins) and fan sit over the CPU to draw ...
Chapter 1 Introduction to Operating Systems
... into the computer system by the user for processing. Storage Unit: The storage unit is used for storing data and instructions before and after processing. Output Unit: The output unit is used for storing the result as output produced by the computer after processing. Processing: The task of performi ...
... into the computer system by the user for processing. Storage Unit: The storage unit is used for storing data and instructions before and after processing. Output Unit: The output unit is used for storing the result as output produced by the computer after processing. Processing: The task of performi ...
Introduction to Computer Science
... 5. What are the components of an operating system? (10%) Components of an operating systems are user interface, memory manager, process manager, device manager, and file manager. 6. How is demand paging more efficient than regular paging?(10%) In regular paging the entire program must be in memory a ...
... 5. What are the components of an operating system? (10%) Components of an operating systems are user interface, memory manager, process manager, device manager, and file manager. 6. How is demand paging more efficient than regular paging?(10%) In regular paging the entire program must be in memory a ...
Distributed operating system
A distributed operating system is a software over a collection of independent, networked, communicating, and physically separate computational nodes. Each individual node holds a specific software subset of the global aggregate operating system. Each subset is a composite of two distinct service provisioners. The first is a ubiquitous minimal kernel, or microkernel, that directly controls that node’s hardware. Second is a higher-level collection of system management components that coordinate the node's individual and collaborative activities. These components abstract microkernel functions and support user applications.The microkernel and the management components collection work together. They support the system’s goal of integrating multiple resources and processing functionality into an efficient and stable system. This seamless integration of individual nodes into a global system is referred to as transparency, or single system image; describing the illusion provided to users of the global system’s appearance as a single computational entity.