PowerPoint XP
... Swapping: Moves processes to disk as necessary Paging: Allows processes to run with only the active pages in memory Assumptions: scarcity of memory and locality of reference ...
... Swapping: Moves processes to disk as necessary Paging: Allows processes to run with only the active pages in memory Assumptions: scarcity of memory and locality of reference ...
Overview and History
... a thread is a unit of code that can be scheduled by the OS like NT/2000, XP uses a 32-level priority scheme to determine the order of thread execution real-time class contains threads with priorities ranging from 16 to 32 variable class contains threads having priorities from 0 to 15 kernel au ...
... a thread is a unit of code that can be scheduled by the OS like NT/2000, XP uses a 32-level priority scheme to determine the order of thread execution real-time class contains threads with priorities ranging from 16 to 32 variable class contains threads having priorities from 0 to 15 kernel au ...
System Call - ShareCourse
... Chapter 2: System Structures Operating System Services User Operating System Interface System Calls Types of System Calls System Programs Operating System Design and Implementation Operating System Structure ...
... Chapter 2: System Structures Operating System Services User Operating System Interface System Calls Types of System Calls System Programs Operating System Design and Implementation Operating System Structure ...
Two Types of Software: System Software: Operating Systems
... Trouble can come if the user tries to have too many processes functioning at the same time so computer freezes. This is called thrashing, and it usually requires user intervention to stop processes and bring order back to the system (CTRL+ALT+DEL and End Task). A dual core processor is a CPU with tw ...
... Trouble can come if the user tries to have too many processes functioning at the same time so computer freezes. This is called thrashing, and it usually requires user intervention to stop processes and bring order back to the system (CTRL+ALT+DEL and End Task). A dual core processor is a CPU with tw ...
Multi-Tasking/Multi-Programming Operating Systems
... The usual technique for dealing with this problem is to split the program into “pages” of data. The most frequently used pages would be left in memory and only when the program tries to access a page which is NOT in memory would the operating system bring in the appropriate page. In large or badly b ...
... The usual technique for dealing with this problem is to split the program into “pages” of data. The most frequently used pages would be left in memory and only when the program tries to access a page which is NOT in memory would the operating system bring in the appropriate page. In large or badly b ...
Buzz Words
... platform to buy, a PC or a Mac. She had used PCs all her life, so she was more familiar with the (2) Windows operating system. Still, she liked the way the (3) Mac OS looked and was considering switching. Her brother didn’t like either operating system, so he used (4) Linux, a free operating system ...
... platform to buy, a PC or a Mac. She had used PCs all her life, so she was more familiar with the (2) Windows operating system. Still, she liked the way the (3) Mac OS looked and was considering switching. Her brother didn’t like either operating system, so he used (4) Linux, a free operating system ...
Chapter 2 Operating System Overview
... – Certain machine level instructions (e.g. I/O) can only be executed by the monitor – kernel ...
... – Certain machine level instructions (e.g. I/O) can only be executed by the monitor – kernel ...
lec1
... processors, preemption, scheduling. Memory: Allocation of main memory. IO devices : when to access io devices, which ones etc. Files: Partitions, space allocation and maintenance. Applications, Data, objects. B.Ramamurthy ...
... processors, preemption, scheduling. Memory: Allocation of main memory. IO devices : when to access io devices, which ones etc. Files: Partitions, space allocation and maintenance. Applications, Data, objects. B.Ramamurthy ...
Operating System
... Hence, data is organized into files and directories by the operating system Examples: File Allocation Table (FAT), New Technology File System (NTFS) ...
... Hence, data is organized into files and directories by the operating system Examples: File Allocation Table (FAT), New Technology File System (NTFS) ...
COMP 3410
... 1. Explain the objectives and functions of modern operating systems. 2. Describe how computing resources are used by application software and managed by system software. 3. Describe reasons for using interrupts, dispatching, and context switching to support concurrency in an operating system. 4. Eva ...
... 1. Explain the objectives and functions of modern operating systems. 2. Describe how computing resources are used by application software and managed by system software. 3. Describe reasons for using interrupts, dispatching, and context switching to support concurrency in an operating system. 4. Eva ...
5. What is an Operating System? Explain its components Answer An
... assigned.· The 'dispatchable' unit.Operating system handles everything is terms of processes only. Process is not the same asprogram. A process is more than a pr ogram code. A process is an ‘active’ entity as oppose toprogram which consider to be a ‘passive’ entity. Being a passive, a program is onl ...
... assigned.· The 'dispatchable' unit.Operating system handles everything is terms of processes only. Process is not the same asprogram. A process is more than a pr ogram code. A process is an ‘active’ entity as oppose toprogram which consider to be a ‘passive’ entity. Being a passive, a program is onl ...
Chapter 2 – Operating System Overview
... 1. T / F – An operating system controls the execution of applications and acts as an interface between applications and the computer hardware. 2. T / F – The operating system maintains information that can be used for billing purposes on multi-user systems. 3. T / F – The operating system typically ...
... 1. T / F – An operating system controls the execution of applications and acts as an interface between applications and the computer hardware. 2. T / F – The operating system maintains information that can be used for billing purposes on multi-user systems. 3. T / F – The operating system typically ...
OS Services System calls and their types
... • Many types of resources - Some (such as CPU cycles, main memory, and file 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 ...
... • Many types of resources - Some (such as CPU cycles, main memory, and file 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 ...
Course Title Operating Systems Course Code CUIT 109 Credits
... Individual Study hrs: 59 Assessment: 13 Notional Hours: 120 Credits 12 The course’s focus is on how an Operating System manages system resources e.g. memory, CPU files etc, while avoiding possible deadlocks and / or starvation. By the end of the course students should be able to : Describe the nec ...
... Individual Study hrs: 59 Assessment: 13 Notional Hours: 120 Credits 12 The course’s focus is on how an Operating System manages system resources e.g. memory, CPU files etc, while avoiding possible deadlocks and / or starvation. By the end of the course students should be able to : Describe the nec ...
System Software and Operating Systems
... one wants to take in typed information and see it on the screen simultaneously Multi-user: having more than one user, operating systems for work stations, mainframe, mini and supercomputers allow for more than one user ...
... one wants to take in typed information and see it on the screen simultaneously Multi-user: having more than one user, operating systems for work stations, mainframe, mini and supercomputers allow for more than one user ...
System Software and Operating Systems
... one wants to take in typed information and see it on the screen simultaneously Multi-user: having more than one user, operating systems for work stations, mainframe, mini and supercomputers allow for more than one user ...
... one wants to take in typed information and see it on the screen simultaneously Multi-user: having more than one user, operating systems for work stations, mainframe, mini and supercomputers allow for more than one user ...
Operating Systems Overview
... The user submit a job (written on card or tape) to a computer operator The computer operator place a batch of several jobs on a input device A special program, the monitor, manages the execution of each program in the batch Resident monitor is in main memory and available for execution ...
... The user submit a job (written on card or tape) to a computer operator The computer operator place a batch of several jobs on a input device A special program, the monitor, manages the execution of each program in the batch Resident monitor is in main memory and available for execution ...
Operating Systems
... Common output devices were line printers, tape drives, and card punches. Users did not interact directly with the computer systems, but he prepared a job (comprising of the program, the data, & some control information). OS ...
... Common output devices were line printers, tape drives, and card punches. Users did not interact directly with the computer systems, but he prepared a job (comprising of the program, the data, & some control information). OS ...
L02_OperatingSystemEvolution
... A program containing even a very small number of I/O ops, will spend most of its time waiting for them Hence: poor CPU usage when only one program is present in memory ...
... A program containing even a very small number of I/O ops, will spend most of its time waiting for them Hence: poor CPU usage when only one program is present in memory ...
File System - QES Main Website
... • It also allow us to access external storage devices, such as USB sticks • And is even includes network ‘drives’, such as ‘Student Resources’ ...
... • It also allow us to access external storage devices, such as USB sticks • And is even includes network ‘drives’, such as ‘Student Resources’ ...