Windows - Part I
... A service is •A process crested by the service control manager •Starts independent of user logon •Configured to start at boot time ...
... A service is •A process crested by the service control manager •Starts independent of user logon •Configured to start at boot time ...
Operating System Concepts for System Programmers
... Finally people use OS for different purposes. Ordinary users will use it to run the applications. Administrators are responsible for maintaining the OS and other applications. And programmers are responsible for the development of new programs. We may also classify the programmers into System Progra ...
... Finally people use OS for different purposes. Ordinary users will use it to run the applications. Administrators are responsible for maintaining the OS and other applications. And programmers are responsible for the development of new programs. We may also classify the programmers into System Progra ...
mac os - WordPress.com
... You can connect remotely to one of the UNIX servers (whether from home or at the labs). This is often how your projects are suggested to be developed as they are graded on those same servers. When you logon in this manner you have a command line (or text based) environment. You can also open up a co ...
... You can connect remotely to one of the UNIX servers (whether from home or at the labs). This is often how your projects are suggested to be developed as they are graded on those same servers. When you logon in this manner you have a command line (or text based) environment. You can also open up a co ...
Transparency Description
... A complex algorithm is going to be executed. Which one is cheaper? Using a multicomputer or a multiprocessor? What’s the idea behind the DSM? What’s the idea behind a middleware? What’s the problems of using a middleware system? What’s the difference of policy and mechanism? Why open distributed sys ...
... A complex algorithm is going to be executed. Which one is cheaper? Using a multicomputer or a multiprocessor? What’s the idea behind the DSM? What’s the idea behind a middleware? What’s the problems of using a middleware system? What’s the difference of policy and mechanism? Why open distributed sys ...
What is an Operating System?
... I/O device drivers: specialized code required to operate I/O devices File system: organize mass storage (disk) into files and directories Utilities: date/time, accounting, file copy, etc. Command interpreter: allow users to enter commands interactively System calls: allow user programs access to O.S ...
... I/O device drivers: specialized code required to operate I/O devices File system: organize mass storage (disk) into files and directories Utilities: date/time, accounting, file copy, etc. Command interpreter: allow users to enter commands interactively System calls: allow user programs access to O.S ...
ing systems were being developed in the
... Third, when object-oriented programming was introduced, many programmers balked at the idea, since they could no longer count on reading or tweaking data structures internal to other objects, a previously common practice in the name of efficiency. For example, when Java was introduced to C programm ...
... Third, when object-oriented programming was introduced, many programmers balked at the idea, since they could no longer count on reading or tweaking data structures internal to other objects, a previously common practice in the name of efficiency. For example, when Java was introduced to C programm ...
Chapter 4 (b) - Jhasudan.com.np
... A disk drive is a device that either stores data or reads data from the disk, which may be a floppy or a hard disk. A PC has floppy drives, hard disk drives, and CD-ROM drives. ◦ The first floppy drive is conventionally called drive A whereas the second floppy drive is designated as drive B and the ...
... A disk drive is a device that either stores data or reads data from the disk, which may be a floppy or a hard disk. A PC has floppy drives, hard disk drives, and CD-ROM drives. ◦ The first floppy drive is conventionally called drive A whereas the second floppy drive is designated as drive B and the ...
Chapter 1
... The systems of the 1960's were also batch processing systems, but they were able to take better advantage of the computer's resources by running several jobs at once. So operating systems designers developed the concept of multiprogramming in which several jobs are in main memory at once; a processo ...
... The systems of the 1960's were also batch processing systems, but they were able to take better advantage of the computer's resources by running several jobs at once. So operating systems designers developed the concept of multiprogramming in which several jobs are in main memory at once; a processo ...
pdf
... physical addressing and uses only programmed I/O. – The technical writers are really happy as well, because the design specification fits on a single page. ...
... physical addressing and uses only programmed I/O. – The technical writers are really happy as well, because the design specification fits on a single page. ...
SCADA Systems, RTOS
... In the case of external interrupts, for example, message came from the network, handler must understand to what thread it is addressed, and deliver it to the address space of the respective thread, perform handshakes protocol with sender, and so on. Such actions may require up to tens of millisecond ...
... In the case of external interrupts, for example, message came from the network, handler must understand to what thread it is addressed, and deliver it to the address space of the respective thread, perform handshakes protocol with sender, and so on. Such actions may require up to tens of millisecond ...
Document
... Traditional Operating System: Disadvantages The kernel manages resources. Different applications have different needs for resources. One generalized OS cannot satisfy all the resource needs from various applications. As a result, application performances are compromised. ...
... Traditional Operating System: Disadvantages The kernel manages resources. Different applications have different needs for resources. One generalized OS cannot satisfy all the resource needs from various applications. As a result, application performances are compromised. ...
Background
... – Keep track of which parts of memory are currently being used and by whom. – Decide which process to load when memory space becomes available. – Allocate and deallocate memory space as needed. ...
... – Keep track of which parts of memory are currently being used and by whom. – Decide which process to load when memory space becomes available. – Allocate and deallocate memory space as needed. ...
Background
... – Keep track of which parts of memory are currently being used and by whom. – Decide which process to load when memory space becomes available. – Allocate and deallocate memory space as needed. ...
... – Keep track of which parts of memory are currently being used and by whom. – Decide which process to load when memory space becomes available. – Allocate and deallocate memory space as needed. ...
OS Basics
... schedule and allocation. Resources mean processor(s), memory, I/Os devices, virtual devices(pipes & Sockets), System timer, Keyboard, displays printer and other such resources which processes (task or threads) request from the OS. ...
... schedule and allocation. Resources mean processor(s), memory, I/Os devices, virtual devices(pipes & Sockets), System timer, Keyboard, displays printer and other such resources which processes (task or threads) request from the OS. ...
Chap 1: Introduction
... interaction (or multi-tasking) The CPU is rapidly multiplexed among several jobs that are kept in memory. (I/O operation is terribly slow!) Time-sharing OS Memory management (virtual memory) and protection File system, disk management Process synchronization (同步) and communication Deadlock h ...
... interaction (or multi-tasking) The CPU is rapidly multiplexed among several jobs that are kept in memory. (I/O operation is terribly slow!) Time-sharing OS Memory management (virtual memory) and protection File system, disk management Process synchronization (同步) and communication Deadlock h ...
The Styx Architecture for Distributed Systems
... All communication with other parts of the system is by explicit messages sent between components. This communication differs in style from applications’ use of local resources. ...
... All communication with other parts of the system is by explicit messages sent between components. This communication differs in style from applications’ use of local resources. ...
Introduction - CS Course Webpages
... • In either case, a single CPU can execute multiple processes concurrently by having the processor switch among them. => Context switch • The OS keeps track of all the state information (context) that the process needs in order to run. • Context: PC value, register file values, … ...
... • In either case, a single CPU can execute multiple processes concurrently by having the processor switch among them. => Context switch • The OS keeps track of all the state information (context) that the process needs in order to run. • Context: PC value, register file values, … ...
Computer Hardware
... operating systems An operating system may work on a variety of platforms A standard operating system that works on different hardware Provides program and file portability Enables user efficiency through recognizable interface Is implemented through a systems programming language like C or ...
... operating systems An operating system may work on a variety of platforms A standard operating system that works on different hardware Provides program and file portability Enables user efficiency through recognizable interface Is implemented through a systems programming language like C or ...
Chapter 1
... • Limited utility in industrial control or robotics • Useful in applications (multimedia, virtual reality) requiring advanced operating-system features. ...
... • Limited utility in industrial control or robotics • Useful in applications (multimedia, virtual reality) requiring advanced operating-system features. ...
What is an Operating System?
... Timesharing (multitasking) is logical extension in which CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing ...
... Timesharing (multitasking) is logical extension in which CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing ...
process - Erciyes Üniversitesi IIBF
... When it has to wait (for I/O for example), OS switches to another job Timesharing (multitasking) is logical extension in which CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing Response time should be < 1 second Each use ...
... When it has to wait (for I/O for example), OS switches to another job Timesharing (multitasking) is logical extension in which CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing Response time should be < 1 second Each use ...
An operating System
... Multiple jobs are executed by the CPU by switching between them, but the switches occur so frequently. Thus, the user can receives an immediate response. For example, in a transaction processing, processor execute each user program in a short burst or quantum of computation. That is if n users are p ...
... Multiple jobs are executed by the CPU by switching between them, but the switches occur so frequently. Thus, the user can receives an immediate response. For example, in a transaction processing, processor execute each user program in a short burst or quantum of computation. That is if n users are p ...
full paper - Acta Electrotechnica et Informatica
... While sharing by BitTorrent protocol, the file is divided to smaller parts of the same size. After client downloads some part, SHA1 hash is computed and compared to the value with the one in the torrent file. If the values match, client replies to other clients with availability of that file part. B ...
... While sharing by BitTorrent protocol, the file is divided to smaller parts of the same size. After client downloads some part, SHA1 hash is computed and compared to the value with the one in the torrent file. If the values match, client replies to other clients with availability of that file part. B ...
Course Introduction - Department of Computer Science
... RPI2 kernel compile time: approx 90 minutes! Spend more time thinking through code before writing Huge established codebase to digest Our goal is that your “hands-on” time is similar to other courses Start early, fail early. ...
... RPI2 kernel compile time: approx 90 minutes! Spend more time thinking through code before writing Huge established codebase to digest Our goal is that your “hands-on” time is similar to other courses Start early, fail early. ...