Operating system
... services, such as editors and debuggers, to assist the programmer in creating programs. Typically, these services are in the form of utility programs that are not actually part of the OS but are accessible through the OS. • Program execution: A number of tasks need to be performed to execute a progr ...
... services, such as editors and debuggers, to assist the programmer in creating programs. Typically, these services are in the form of utility programs that are not actually part of the OS but are accessible through the OS. • Program execution: A number of tasks need to be performed to execute a progr ...
iMeMex: Escapes from the Personal Information Jungle (Demo Paper)
... other applications through a WebDAV interface. The reason we choose WebDAV is that this protocol is already supported by a large number of applications (Eclipse, Word, etc.) as well as operating systems (Windows, Linux, Mac OS X). The WebDAV protocol is usually used to mount web-based file repositor ...
... other applications through a WebDAV interface. The reason we choose WebDAV is that this protocol is already supported by a large number of applications (Eclipse, Word, etc.) as well as operating systems (Windows, Linux, Mac OS X). The WebDAV protocol is usually used to mount web-based file repositor ...
CIS162AB
... data and check the results. If it was incorrect, we would change the program, run it again, and reenter the data. Depending on the application, it may be more efficient to capture the raw data the first time it is entered and store in a file. A program or many different programs can then read ...
... data and check the results. If it was incorrect, we would change the program, run it again, and reenter the data. Depending on the application, it may be more efficient to capture the raw data the first time it is entered and store in a file. A program or many different programs can then read ...
Blizzard Bag #2 – PC Maintenance
... Defined as, “The way an operating system handles activities such as storing data, interfacing with the user, and presenting information on the screen.” Multitasking – the ability of an operating system to support two or more programs running at the same time. Although it seems that both programs are ...
... Defined as, “The way an operating system handles activities such as storing data, interfacing with the user, and presenting information on the screen.” Multitasking – the ability of an operating system to support two or more programs running at the same time. Although it seems that both programs are ...
Operating-System Structures
... 3. Parameters placed, or pushed, onto the stack by the program and popped off the stack by the operating system. Block and stack methods do not limit the number or length of parameters being passed. A. Frank - P. Weisberg ...
... 3. Parameters placed, or pushed, onto the stack by the program and popped off the stack by the operating system. Block and stack methods do not limit the number or length of parameters being passed. A. Frank - P. Weisberg ...
Week 5 - Portland State University
... Disk blocks are not a very user-friendly abstraction for storage contiguous allocation may be difficult for large data items how do you manage administrative information? ...
... Disk blocks are not a very user-friendly abstraction for storage contiguous allocation may be difficult for large data items how do you manage administrative information? ...
PPT - CS
... The hard disk can write and read information to and from the main memory. The access speed of main memory is much faster than a hard disk. • Programs are stored on the disk until they are loaded into memory, and then use the disk as both the source and destination of the information for their proces ...
... The hard disk can write and read information to and from the main memory. The access speed of main memory is much faster than a hard disk. • Programs are stored on the disk until they are loaded into memory, and then use the disk as both the source and destination of the information for their proces ...
Section 3
... • Goal: Determine development and product direction for the next 10 years • Included 11 members from both major divisions (GPD, DSD) and elsewhere (including Fred Brooks) • Met daily for 2 months in late 1961 • Produced an 80 page report ...
... • Goal: Determine development and product direction for the next 10 years • Included 11 members from both major divisions (GPD, DSD) and elsewhere (including Fred Brooks) • Met daily for 2 months in late 1961 • Produced an 80 page report ...
Introduction - CS Course Webpages
... can only execute the code for a single process. • When the OS decides to transfer control from the current process to another process, it performs a context switch by saving the context of the current process, restoring the context of the new process, and passing control to the new process. ...
... can only execute the code for a single process. • When the OS decides to transfer control from the current process to another process, it performs a context switch by saving the context of the current process, restoring the context of the new process, and passing control to the new process. ...
Lecture_1 - bridges to computing
... programs and users, making sure everything runs smoothly, without interference, despite the fact that numerous devices and programs are used simultaneously. ◦ An operating system also has a vital role to play in security. Its job includes preventing unauthorized users from accessing the computer sys ...
... programs and users, making sure everything runs smoothly, without interference, despite the fact that numerous devices and programs are used simultaneously. ◦ An operating system also has a vital role to play in security. Its job includes preventing unauthorized users from accessing the computer sys ...
GC University Lahore
... operating systems are multitasking, multiprocessing and multi-user. All desktop Operating systems and most of server operating systems provide GUI features also. All or most OS are modularized, configurable and customizable. For this purpose, OS vendors also release development support for utilizing ...
... operating systems are multitasking, multiprocessing and multi-user. All desktop Operating systems and most of server operating systems provide GUI features also. All or most OS are modularized, configurable and customizable. For this purpose, OS vendors also release development support for utilizing ...
Typical Multiprocessing Configurations
... • To keep system well-balanced & ensure best use of resources, job scheduling is based on several requirements and policies. – E.g., new jobs might be assigned to the processor with lightest load or best combination of output devices available. ...
... • To keep system well-balanced & ensure best use of resources, job scheduling is based on several requirements and policies. – E.g., new jobs might be assigned to the processor with lightest load or best combination of output devices available. ...
William Stallings Computer Organization and Architecture
... – Splits 4G linear memory into 1024 page groups of 4Mbyte – Each page table has 1024 entries corresponding to 4Kbyte ...
... – Splits 4G linear memory into 1024 page groups of 4Mbyte – Each page table has 1024 entries corresponding to 4Kbyte ...
Process Concept
... A process can be thought of as a program in execution. A process will need certain resources – such as CPU time, memory, files, and I/O devices – to accompany its task. These resources are allocated to the process either when it is created or while it is executing. A process is the unit of work in m ...
... A process can be thought of as a program in execution. A process will need certain resources – such as CPU time, memory, files, and I/O devices – to accompany its task. These resources are allocated to the process either when it is created or while it is executing. A process is the unit of work in m ...
System Call - KOVAN Research Lab
... The system call interface invokes intended system call in OS kernel and returns status of the system call and any return values The caller need know nothing about how the system call is implemented Just needs to obey API and understand what OS will do as a result call ...
... The system call interface invokes intended system call in OS kernel and returns status of the system call and any return values The caller need know nothing about how the system call is implemented Just needs to obey API and understand what OS will do as a result call ...
Networking for Embedded Systems
... MQX, RTCS, etc are structured as a set of C files built by the user into a library that is linked into the same code space as the application. Libraries contain all functions but only called functions are included with the image. ...
... MQX, RTCS, etc are structured as a set of C files built by the user into a library that is linked into the same code space as the application. Libraries contain all functions but only called functions are included with the image. ...
Operating systems Operating systems Protected Objects
... • The capabilities must be stored in memory inaccessible to the subjects. • Capabilities can be revoked. • Kerberos (more about Kerberos later) is an example that uses capabilities. ...
... • The capabilities must be stored in memory inaccessible to the subjects. • Capabilities can be revoked. • Kerberos (more about Kerberos later) is an example that uses capabilities. ...
3. Operating Systems - Informática Ingeniería en Electrónica y
... a virtual or extended machine with a much simpler use. It hides fine working details the user does not need to know (e.g. how to manage the read/write head of a magnetic disc) It provides an extra set of instructions, the System Calls They can be used by other programs or by the programmer working ...
... a virtual or extended machine with a much simpler use. It hides fine working details the user does not need to know (e.g. how to manage the read/write head of a magnetic disc) It provides an extra set of instructions, the System Calls They can be used by other programs or by the programmer working ...
William Stallings Computer Organization and Architecture
... —Coalesce - Join adjacent holes into one large hole —Compaction - From time to time go through memory and move all hole into one free block (c.f. disk defragmentation) ...
... —Coalesce - Join adjacent holes into one large hole —Compaction - From time to time go through memory and move all hole into one free block (c.f. disk defragmentation) ...
Import Settings:
... B) is an operating system that provides file sharing across a network C) is used when rigid time requirements are present D) can only operate one application at a time 9. Which of the following is a property of peer-to-peer systems? A) Clients and servers are not distinguished from one another. B) ...
... B) is an operating system that provides file sharing across a network C) is used when rigid time requirements are present D) can only operate one application at a time 9. Which of the following is a property of peer-to-peer systems? A) Clients and servers are not distinguished from one another. B) ...
THE MACH SYSTEM
... Task: Execution environment Contains one or more threads Provides a protection domain, a protected access to system resources via ports Thread: unit of computation (execution) must run in the context of a task all threads in a task share ports, memory, etc. process = task + thread ...
... Task: Execution environment Contains one or more threads Provides a protection domain, a protected access to system resources via ports Thread: unit of computation (execution) must run in the context of a task all threads in a task share ports, memory, etc. process = task + thread ...
Operating Systems I: Chapter 1
... – The CPU is multiplexed among several jobs that are kept in memory and on disk (the CPU is allocated to a job only if the job is in memory) ...
... – The CPU is multiplexed among several jobs that are kept in memory and on disk (the CPU is allocated to a job only if the job is in memory) ...