History of Operating Systems
... creates new process terminates process opens file creates directory ...
... creates new process terminates process opens file creates directory ...
Ch_01
... obviate the need for device polling. A trap can be used to call operating system routines or to catch arithmetic errors. 1.11 Direct memory access is used for high-speed I/O devices in order to avoid increasing the CPU´s execution load. a. How does the CPU interface with the device to coordinate the ...
... obviate the need for device polling. A trap can be used to call operating system routines or to catch arithmetic errors. 1.11 Direct memory access is used for high-speed I/O devices in order to avoid increasing the CPU´s execution load. a. How does the CPU interface with the device to coordinate the ...
História dos Sistemas Operativos
... A mid-range 2nd-generation scientific computer. Among its features were core memory, a disk drive, and a subroutine-call instruction. ...
... A mid-range 2nd-generation scientific computer. Among its features were core memory, a disk drive, and a subroutine-call instruction. ...
COS 318: Operating Systems Introduction Kai Li Computer Science Department
... Software between applications and hardware Make finite resources “infinite” Provide protection and security ...
... Software between applications and hardware Make finite resources “infinite” Provide protection and security ...
Introduction to OS - faculty.cs.tamu.edu
... devices, timers, various errors) or can be software-generated (system ...
... devices, timers, various errors) or can be software-generated (system ...
FILE
... are very cryptic and hence needs a gentle introduction. Students will be introduced to the basic knowledge about (not necessarily all the commands themselves) Linux commands, system calls, library and scripts - what feature is provided in each, and where to look for the information about them, etc. ...
... are very cryptic and hence needs a gentle introduction. Students will be introduced to the basic knowledge about (not necessarily all the commands themselves) Linux commands, system calls, library and scripts - what feature is provided in each, and where to look for the information about them, etc. ...
2. OS Components
... (although, in reality, architectural differences often make this more difficult than it may appear). Furthermore, actual system calls can often be more detailed and difficult to work with than the API available to an application programmer. Nevertheless, there often exists a strong correlation bet ...
... (although, in reality, architectural differences often make this more difficult than it may appear). Furthermore, actual system calls can often be more detailed and difficult to work with than the API available to an application programmer. Nevertheless, there often exists a strong correlation bet ...
Chapter 2 Operating
... 2.5 Operating-System Design and Implementation The first problem in designing a system is to define goals and specifications. At the highest level, the design of the system will be affected by the choice of hardware and the type of system. Once an operating system is designed, it must be implemented ...
... 2.5 Operating-System Design and Implementation The first problem in designing a system is to define goals and specifications. At the highest level, the design of the system will be affected by the choice of hardware and the type of system. Once an operating system is designed, it must be implemented ...
dsk-01-intro
... Easier to extend a microkernel Easier to port the operating system to new architectures More reliable (less code is running in kernel mode) ...
... Easier to extend a microkernel Easier to port the operating system to new architectures More reliable (less code is running in kernel mode) ...
CMPU1022 Operating Systems 1
... It provides an overview of the major components of a computer system and their interaction with the systems software. ...
... It provides an overview of the major components of a computer system and their interaction with the systems software. ...
Distributed Computing Systems
... • Different clients may mount the servers in different places • Inconsistencies in view make NOSes harder for users than DOSes – But easier to scale by adding computers ...
... • Different clients may mount the servers in different places • Inconsistencies in view make NOSes harder for users than DOSes – But easier to scale by adding computers ...
OPERATING-SYSTEM
... We can consider each of these development stages as providing an operating environment for business use. Some of these are now obsolete,but you should not automatically assume that an OS that does not focus on some many situations where such an approach is inappropriate. The environments we will con ...
... We can consider each of these development stages as providing an operating environment for business use. Some of these are now obsolete,but you should not automatically assume that an OS that does not focus on some many situations where such an approach is inappropriate. The environments we will con ...
Buzz Words
... Veena was looking into buying a new computer and was trying to decide what (1) 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 ...
... Veena was looking into buying a new computer and was trying to decide what (1) 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 ...
1.Introduction
... data base Device sharing Allow many users to share expensive peripherals like color printers Communication Make human-to-human communication easier, for example, by electronic mail Flexibility ...
... data base Device sharing Allow many users to share expensive peripherals like color printers Communication Make human-to-human communication easier, for example, by electronic mail Flexibility ...
UNIX Software Tools
... system, presenting them to you and every other user as a coherent system You do not need to know about it in order to use a UNIX system, but very important if you are administering one. ...
... system, presenting them to you and every other user as a coherent system You do not need to know about it in order to use a UNIX system, but very important if you are administering one. ...
Scale and Performance in the Denali Isolation Kernel
... The Delani virtual instruction set is a subset of x86, so that most virtual instructions execute directly on the physical processor. x86 VMMs normally have to use binary rewriting and memory protection techniques to virtualize some of the instructions. Since Delani does not support legacy operating ...
... The Delani virtual instruction set is a subset of x86, so that most virtual instructions execute directly on the physical processor. x86 VMMs normally have to use binary rewriting and memory protection techniques to virtualize some of the instructions. Since Delani does not support legacy operating ...
Lecture 2
... 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). A job swapped in and out of memory to the disk. On-line communication between the user and the system is provided; when the operating system finishes the execut ...
... 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). A job swapped in and out of memory to the disk. On-line communication between the user and the system is provided; when the operating system finishes the execut ...
Chapter 1 Basic Concepts of Operating Systems
... • The system software is the set of programs that control the activities and functions of the various hardware components, programming tools and abstractions, and other utilities to monitor the state of the computer system. • The system software forms an environment for the programmers to develop an ...
... • The system software is the set of programs that control the activities and functions of the various hardware components, programming tools and abstractions, and other utilities to monitor the state of the computer system. • The system software forms an environment for the programmers to develop an ...
Bhargavi Konduru`s presentation on Constructing Secure Operating
... Applications can access services provided by servers through server proxies. Only TL4 microkernel executes in the privileged mode directly on top of hardware. It provides protection domains, threads, and IPC. The misbehaviors of applications do not cause data destruction in servers protection ...
... Applications can access services provided by servers through server proxies. Only TL4 microkernel executes in the privileged mode directly on top of hardware. It provides protection domains, threads, and IPC. The misbehaviors of applications do not cause data destruction in servers protection ...
Chapter 2 Operating System Overview
... time. Functions that were originally part of the operating system have migrated to the hardware. On the other side, programmed functions extraneous to the problems being solved by the application programs are included in the operating system. ...
... time. Functions that were originally part of the operating system have migrated to the hardware. On the other side, programmed functions extraneous to the problems being solved by the application programs are included in the operating system. ...
operating systems structures
... kernel is a smaller kernel. The resulting OS is easier to port from one hard ware design to another. It also provides more security and reliability since most services are running as user rather than kernel processes. Mach, MacOS X Server, QNX, OS/2, and Windows NT are examples of microkernel based ...
... kernel is a smaller kernel. The resulting OS is easier to port from one hard ware design to another. It also provides more security and reliability since most services are running as user rather than kernel processes. Mach, MacOS X Server, QNX, OS/2, and Windows NT are examples of microkernel based ...