Software nature & capabilities - Computing and ICT in a Nutshell
... be a command line or a Graphical User Interface. ...
... be a command line or a Graphical User Interface. ...
slides - network systems lab @ sfu
... Most modern OSes (e.g., Solaris, Linux) implement kernel modules ...
... Most modern OSes (e.g., Solaris, Linux) implement kernel modules ...
System Software
... environment). Those instructions may activate execution of application or utility program, or command the operating system kernel to finish the user task. Device drivers and basic input/output system may be called for accessing their associated hardware by the kernel. It is important to note that ap ...
... environment). Those instructions may activate execution of application or utility program, or command the operating system kernel to finish the user task. Device drivers and basic input/output system may be called for accessing their associated hardware by the kernel. It is important to note that ap ...
CS 381 Operating Systems
... An operating system is an intermediary between the user programs and the computer hardware resources. By managing disparate hardware resources, an OS shields user programs from the complexities of individual hardware devices and issues such as concurrency and failure. The user gets an abstraction of ...
... An operating system is an intermediary between the user programs and the computer hardware resources. By managing disparate hardware resources, an OS shields user programs from the complexities of individual hardware devices and issues such as concurrency and failure. The user gets an abstraction of ...
university of helsinki 24.8.2001
... In a multiprogramming environment the applications are not allowed to mess each other and they are not allowed to use resources not owned by themselves without given permissions. To implement a multiprogramming operating system certain hardware level features are desirable. Explain what kind of supp ...
... In a multiprogramming environment the applications are not allowed to mess each other and they are not allowed to use resources not owned by themselves without given permissions. To implement a multiprogramming operating system certain hardware level features are desirable. Explain what kind of supp ...
Examination paper
... and hardware components that an operating system manages to meet its users’ computing needs (CPU and its components, main memory, secondary storage, peripheral controllers and devices, motherboard, BIOS, and buses). 2. (max 5 points) Explain the ways of ensuring a hardware protection (CPU, memory, I ...
... and hardware components that an operating system manages to meet its users’ computing needs (CPU and its components, main memory, secondary storage, peripheral controllers and devices, motherboard, BIOS, and buses). 2. (max 5 points) Explain the ways of ensuring a hardware protection (CPU, memory, I ...
our Jeffrey C. Mogul HP Labs, Palo Alto, CA, 94304
... we care about, and are pre-packaged to run easily (without a lot of thought about parameters) on cycle-level simulators. There are a lot of possibilities for OS-relevant benchmarks; in addition to those listed above, one might include Hadoop, or a virtualization management workload [6]. (Micro-bench ...
... we care about, and are pre-packaged to run easily (without a lot of thought about parameters) on cycle-level simulators. There are a lot of possibilities for OS-relevant benchmarks; in addition to those listed above, one might include Hadoop, or a virtualization management workload [6]. (Micro-bench ...
Operating systems. History. Function. Organization. Software
... • Users seeking services from same machine at the same time – time sharing – Implemented using a technique called multiprogramming (time is divided into multiple intervals, execution of one job is limited to a single time interval) ...
... • Users seeking services from same machine at the same time – time sharing – Implemented using a technique called multiprogramming (time is divided into multiple intervals, execution of one job is limited to a single time interval) ...
Document
... • Users seeking services from same machine at the same time – time sharing – Implemented using a technique called multiprogramming (time is divided into multiple intervals, execution of one job is limited to a single time interval) ...
... • Users seeking services from same machine at the same time – time sharing – Implemented using a technique called multiprogramming (time is divided into multiple intervals, execution of one job is limited to a single time interval) ...
Operating Systems (OS)
... e.g. a batch job, the shell of a login session, a program run The execution of processes is controlled by the kernel and is interlaced – this part of the kernel is known as the despatcher or low-level scheduler when a process ends, or uses up its scheduled time, or cannot be continued because an int ...
... e.g. a batch job, the shell of a login session, a program run The execution of processes is controlled by the kernel and is interlaced – this part of the kernel is known as the despatcher or low-level scheduler when a process ends, or uses up its scheduled time, or cannot be continued because an int ...
Lecture 3
... above the physical hardware Provides the file system, CPU scheduling, memory management, and other operating-system functions; a large number of functions for one level ...
... above the physical hardware Provides the file system, CPU scheduling, memory management, and other operating-system functions; a large number of functions for one level ...
Software - Hoxie Public Schools
... The figure on the left shows a command-line interface, where commands are typed in at the prompt. The figure on the right is a graphical user interface (GUI) where users perform actions by clicking and manipulating icons. ...
... The figure on the left shows a command-line interface, where commands are typed in at the prompt. The figure on the right is a graphical user interface (GUI) where users perform actions by clicking and manipulating icons. ...
System Programs - Bilkent University Computer Engineering
... – Easier to port the operating system to new architectures – More reliable (less code is running in kernel mode) – More secure • Detriments: – Performance overhead of user space to kernel space communication ...
... – Easier to port the operating system to new architectures – More reliable (less code is running in kernel mode) – More secure • Detriments: – Performance overhead of user space to kernel space communication ...
Operating System
... Since interactive I/O typically runs at people speeds, it may take a long time to completed. During this time a CPU can be utilized by another process. ...
... Since interactive I/O typically runs at people speeds, it may take a long time to completed. During this time a CPU can be utilized by another process. ...
IT ESSENTIALS V. 4.1 Module 5 Fundamental Operating Systems
... A real-mode application runs within a protected-mode operating system Creates the environment of an earlier operating system for applications that are not compatible with the current operating system 1. 32-bit can address only 4 GB of RAM 64-bit can address more than 128 GB of RAM 2. Memory manageme ...
... A real-mode application runs within a protected-mode operating system Creates the environment of an earlier operating system for applications that are not compatible with the current operating system 1. 32-bit can address only 4 GB of RAM 64-bit can address more than 128 GB of RAM 2. Memory manageme ...
System
... kernel as though they were all hardware • provides an interface identical to the underlying bare hardware • The operating system host creates the illusion that a process has its own processor and (virtual memory) • Each guest provided with a (virtual) copy of underlying computer ...
... kernel as though they were all hardware • provides an interface identical to the underlying bare hardware • The operating system host creates the illusion that a process has its own processor and (virtual memory) • Each guest provided with a (virtual) copy of underlying computer ...
Operating System
... UNIX/Linux is a multitasking system Can execute more than one program at a time UNIX/Linux is a portable operating system Used in many computing environments ...
... UNIX/Linux is a multitasking system Can execute more than one program at a time UNIX/Linux is a portable operating system Used in many computing environments ...
Slides - Bilkent University Computer Engineering Department
... has finished its current operation or it has something by causing an interrupt ...
... has finished its current operation or it has something by causing an interrupt ...
Chapter 1: Introduction
... has finished its current operation or it has something by causing an interrupt ...
... has finished its current operation or it has something by causing an interrupt ...
Document
... Final Exam: 50% Mid-term Exam: 30% Homework (two total): 10% Team Machine Problems (5 total): 15% ...
... Final Exam: 50% Mid-term Exam: 30% Homework (two total): 10% Team Machine Problems (5 total): 15% ...
PPT
... OS has its code in memory and so does each runnable user process Would we want a process to store random data into the OS’s code or data segments? What about into another processes code or data segments? ...
... OS has its code in memory and so does each runnable user process Would we want a process to store random data into the OS’s code or data segments? What about into another processes code or data segments? ...
1 - Erode Sengunthar Engineering College
... requires CPU scheduling scheme , job synchronization , job communication also jobs should not get stuck in deadlock. 6.Differentiate TCS & LCS ? LCS 1.Each processor has its own local memory 2.Each processor can communicate with other all through communication lines ...
... requires CPU scheduling scheme , job synchronization , job communication also jobs should not get stuck in deadlock. 6.Differentiate TCS & LCS ? LCS 1.Each processor has its own local memory 2.Each processor can communicate with other all through communication lines ...
document
... Allowed multiple interactive users to share the computer simultaneously. Each user session is simply another process to be managed by the OS. As with multiprogramming OSs, the CPU executes multiple “jobs” simultaneously by switching between them. Each user has at least one program loaded into memory ...
... Allowed multiple interactive users to share the computer simultaneously. Each user session is simply another process to be managed by the OS. As with multiprogramming OSs, the CPU executes multiple “jobs” simultaneously by switching between them. Each user has at least one program loaded into memory ...