virtual machine
... and batch users. Many commands are given to the operating system by control statements which deal with: Process creation and management, Main-memory management, file-system access, I/O handling, secondary-storage management, Networking, Protection. ...
... and batch users. Many commands are given to the operating system by control statements which deal with: Process creation and management, Main-memory management, file-system access, I/O handling, secondary-storage management, Networking, Protection. ...
Tutorail-two-with
... 2.9 List five services provided by an operating system. Explain how each provides convenience to the users. Explain also in which cases it would be impossible for user-level programs to provide these services. Answer: a. Program execution. The operating system loads the contents (or sections) of a ...
... 2.9 List five services provided by an operating system. Explain how each provides convenience to the users. Explain also in which cases it would be impossible for user-level programs to provide these services. Answer: a. Program execution. The operating system loads the contents (or sections) of a ...
slides
... multiprogramming organizes jobs (code and data) so CPU always has one to execute subset of total jobs in system is kept in memory one job selected and run via job scheduling when it has to wait (for I/O for example), OS switches to another job ...
... multiprogramming organizes jobs (code and data) so CPU always has one to execute subset of total jobs in system is kept in memory one job selected and run via job scheduling when it has to wait (for I/O for example), OS switches to another job ...
Module 3: Operating
... programs permanently, the computer system must provide secondary storage to back up main memory. Most modern computer systems use disks as the principle on-line storage medium, for both programs and data. The operating system is responsible for the following activities in connection with disk ma ...
... programs permanently, the computer system must provide secondary storage to back up main memory. Most modern computer systems use disks as the principle on-line storage medium, for both programs and data. The operating system is responsible for the following activities in connection with disk ma ...
Module 3: Operating-System Structures
... permanently, the computer system must provide secondary storage to back up main memory. Most modern computer systems use disks as the principle on-line storage medium, for both programs and data. The operating system is responsible for the following activities in connection with disk management: ...
... permanently, the computer system must provide secondary storage to back up main memory. Most modern computer systems use disks as the principle on-line storage medium, for both programs and data. The operating system is responsible for the following activities in connection with disk management: ...
ppt
... storage) may have special allocation code, others (such as I/O devices) may have general request and release code – Accounting - To keep track of which users use how much and what kinds of computer resources – Protection and security - The owners of information stored in a multiuser or networked com ...
... storage) may have special allocation code, others (such as I/O devices) may have general request and release code – Accounting - To keep track of which users use how much and what kinds of computer resources – Protection and security - The owners of information stored in a multiuser or networked com ...
2.01
... mouse and provide articulated graphical output on the computer monitor. There are at least two different principles widely used in GUI design: Object-oriented user interfaces (OOUIs) and application oriented ...
... mouse and provide articulated graphical output on the computer monitor. There are at least two different principles widely used in GUI design: Object-oriented user interfaces (OOUIs) and application oriented ...
Chapter 1 - Introduction to Operating Systems
... – Two or more programs stored in main memory at the same time – When one job needs to wait (e.g. I/O operation), CPU will switch to another job to execute – When the first job finishes waiting, CPU will get back to the first job to ...
... – Two or more programs stored in main memory at the same time – When one job needs to wait (e.g. I/O operation), CPU will switch to another job to execute – When the first job finishes waiting, CPU will get back to the first job to ...
Lecture 2
... • Interface between executing program and OS defined by set of system calls OS provides. • System call causes a TRAP to switch from user to kernel mode and starts execution at interrupt vector location for TRAP instruction. • Operating system looks at requested operation and any parameters passed by ...
... • Interface between executing program and OS defined by set of system calls OS provides. • System call causes a TRAP to switch from user to kernel mode and starts execution at interrupt vector location for TRAP instruction. • Operating system looks at requested operation and any parameters passed by ...
2.01 - Fordham University
... Program execution - The system must be able to load a program into memory and to run that program, end execution, either normally or abnormally (indicating error) I/O operations - A running program may require I/O, which may involve a file or an I/O device File-system manipulation – Users/programs n ...
... Program execution - The system must be able to load a program into memory and to run that program, end execution, either normally or abnormally (indicating error) I/O operations - A running program may require I/O, which may involve a file or an I/O device File-system manipulation – Users/programs n ...
Module 3: Operating
... Additional functions exist not for helping the user, but rather for ensuring efficient system operations. • Resource allocation – allocating resources to multiple users or multiple jobs running at the same time. • Accounting – keep track of and record which users use how much and what kinds of compu ...
... Additional functions exist not for helping the user, but rather for ensuring efficient system operations. • Resource allocation – allocating resources to multiple users or multiple jobs running at the same time. • Accounting – keep track of and record which users use how much and what kinds of compu ...
(MSWindows, LINUX, UNIX) (China)
... - Surrounding the kernel and acting as a user interface to the Unix operating system - Command language interpreter - Interprets the command users enter - Selects and runs the command or program - Provides the results to the screen or file as directed by the command -C shell, Bourne shell, Korn shel ...
... - Surrounding the kernel and acting as a user interface to the Unix operating system - Command language interpreter - Interprets the command users enter - Selects and runs the command or program - Provides the results to the screen or file as directed by the command -C shell, Bourne shell, Korn shel ...
Operating System Concepts
... – a Pascal Compiler may be executed by several people simultaneously on a network – There will only be one copy in memory – Different parts of it will be used by several different people to compile their programs – They will share the same code – Each instance of the program running will be a proces ...
... – a Pascal Compiler may be executed by several people simultaneously on a network – There will only be one copy in memory – Different parts of it will be used by several different people to compile their programs – They will share the same code – Each instance of the program running will be a proces ...
N4Less11
... - provides an abstraction of a larger (or just different machine) - Example: - Virtual memory: looks like more memory - Java: pseudo machine that looks like a stack machine - IBM VM: a complete virtual machine ...
... - provides an abstraction of a larger (or just different machine) - Example: - Virtual memory: looks like more memory - Java: pseudo machine that looks like a stack machine - IBM VM: a complete virtual machine ...
Using FPGAs to create a complete computer system Marcela Melara
... All components are connected via a high-speed bus ...
... All components are connected via a high-speed bus ...
Chapter - 5th Semester Notes
... • An operating system provides an environment for the execution of programs. • Program execution – System capability to load a program into memory and to run it. – Program must be able to end its execution, either normally or abnormally (indicating error). ...
... • An operating system provides an environment for the execution of programs. • Program execution – System capability to load a program into memory and to run it. – Program must be able to end its execution, either normally or abnormally (indicating error). ...
OPERATING SYSTEMS
... Public files allows any user access to file, while private files allow no one else access to file; and semi-private files allows some users with the correct password access to files. User also specifies if others can or cannot modify, erase these accessible files. Hence the OS keeps “directories of ...
... Public files allows any user access to file, while private files allow no one else access to file; and semi-private files allows some users with the correct password access to files. User also specifies if others can or cannot modify, erase these accessible files. Hence the OS keeps “directories of ...
Operating Systems
... 2. Loads programs into the computers memory so that you can use them. 3. Co-ordinates how programs work with the CPU, RAM, keyboard, mouse, printer and other hardware as well as with software. 4. Manages the way information is stored on and retreived from disks. The User Interface With an OS you see ...
... 2. Loads programs into the computers memory so that you can use them. 3. Co-ordinates how programs work with the CPU, RAM, keyboard, mouse, printer and other hardware as well as with software. 4. Manages the way information is stored on and retreived from disks. The User Interface With an OS you see ...
OPERATING SYSTEM FUNCTIONS
... between applications and the actual data processing done at the hardware level. The kernel's responsibilities include managing the system's resources (the communication between hardware and software components). Usually as a basic component of an operating system, a kernel can provide the lowest-lev ...
... between applications and the actual data processing done at the hardware level. The kernel's responsibilities include managing the system's resources (the communication between hardware and software components). Usually as a basic component of an operating system, a kernel can provide the lowest-lev ...
Operating System Structures
... protection provides a mechanism to control access to system resources ...
... protection provides a mechanism to control access to system resources ...
Operating System Services
... Resource allocation - When multiple users / jobs running concurrently, resources must be allocated to each of them Accounting - To keep track of which users use, how much, and what kinds of computer resources Protection and security n ...
... Resource allocation - When multiple users / jobs running concurrently, resources must be allocated to each of them Accounting - To keep track of which users use, how much, and what kinds of computer resources Protection and security n ...
Module 3: Operating-System Structures
... Additional functions exist not for helping the user, but rather for ensuring efficient system operations. ...
... Additional functions exist not for helping the user, but rather for ensuring efficient system operations. ...
Slide 1
... • Discuss OS operation with example computer having keyboard, display, disk, and printer • User enters command, loader transfers code and data in object file to memory to execute • To read data file on disk, request made to OS • OS and I/O activity occur while program waits • Program waits again aft ...
... • Discuss OS operation with example computer having keyboard, display, disk, and printer • User enters command, loader transfers code and data in object file to memory to execute • To read data file on disk, request made to OS • OS and I/O activity occur while program waits • Program waits again aft ...