CS423/523
... 1. Each process must have enough memory in which to execute, and respect memory boundaries of each other 2. Different types of memory must be used properly so that each process can run most effectively such as ...
... 1. Each process must have enough memory in which to execute, and respect memory boundaries of each other 2. Different types of memory must be used properly so that each process can run most effectively such as ...
CS5460: Operating Systems
... – OS/360 was a stack of cards several feet high – New OS services: – Shell to accept interactive commands – File system to store data persistently – Virtual memory to allow multiple programs to be resident – New problems: response time and thrashing – Need to limit number of simultaneous proc ...
... – OS/360 was a stack of cards several feet high – New OS services: – Shell to accept interactive commands – File system to store data persistently – Virtual memory to allow multiple programs to be resident – New problems: response time and thrashing – Need to limit number of simultaneous proc ...
Week 5 - Portland State University
... Trap instruction changes PC to point to an OS entry point instruction application calls a library procedure that includes the appropriate trap instruction fetch/decode/execute cycle begins at a specified OS entry point called a system call ...
... Trap instruction changes PC to point to an OS entry point instruction application calls a library procedure that includes the appropriate trap instruction fetch/decode/execute cycle begins at a specified OS entry point called a system call ...
What is an Operating System?
... One or more CPUs, device controllers connect through common bus providing access to shared memory ...
... One or more CPUs, device controllers connect through common bus providing access to shared memory ...
Chapter 2 – outline
... Designed to run with Apple computers. Not nearly as widely used as the Windows operating system. Fewer application programs have been written for it. One of the most innovative operating systems. It is popular with professional graphic designers, desktop publishers, and many home users. ...
... Designed to run with Apple computers. Not nearly as widely used as the Windows operating system. Fewer application programs have been written for it. One of the most innovative operating systems. It is popular with professional graphic designers, desktop publishers, and many home users. ...
What is an Operating System?
... One or more CPUs, device controllers connect through common bus providing access to shared memory ...
... One or more CPUs, device controllers connect through common bus providing access to shared memory ...
Operating Systems
... Now in the Learning Hub Assumes you are using Audacity If not, please see me asap Seems a lot, but shouldn’t be too hard once you have Audacity and your files ...
... Now in the Learning Hub Assumes you are using Audacity If not, please see me asap Seems a lot, but shouldn’t be too hard once you have Audacity and your files ...
Chapter 1: Field Guide to Identifying Computers in the Wild
... • Hardware support – Most hardware today works for Windows and Linux – Macintosh somewhat proprietary ...
... • Hardware support – Most hardware today works for Windows and Linux – Macintosh somewhat proprietary ...
Module 3: Operating
... Since main memory (primary storage) is volatile and too small to accommodate all data and 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 o ...
... Since main memory (primary storage) is volatile and too small to accommodate all data and 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 o ...
Module 3: Operating
... Since main memory (primary storage) is volatile and too small to accommodate all data and 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 o ...
... Since main memory (primary storage) is volatile and too small to accommodate all data and 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 o ...
Lecture 18
... Classes of Virtualization • Platform – 1960’s term: virtual machines used hardware and software – Host running sofware using hardware assistance to execute a guest – Guest can be application or entire OS – Guest runs as if it were installed on bare metal – Typically many guests run on a single host ...
... Classes of Virtualization • Platform – 1960’s term: virtual machines used hardware and software – Host running sofware using hardware assistance to execute a guest – Guest can be application or entire OS – Guest runs as if it were installed on bare metal – Typically many guests run on a single host ...
Microsoft`s Disk Operating System CS-550
... personal computers running the Intel 8086 microprocessor. (Paterson, 1983a) When 86-DOS was developed, Digital Research’s Control Program for Microcomputers (CP/M-80) was the operating system most commonly in use for 8-bit personal computers. (Flynn, McHoes, 1996) CP/M-80 was supported by a wide ran ...
... personal computers running the Intel 8086 microprocessor. (Paterson, 1983a) When 86-DOS was developed, Digital Research’s Control Program for Microcomputers (CP/M-80) was the operating system most commonly in use for 8-bit personal computers. (Flynn, McHoes, 1996) CP/M-80 was supported by a wide ran ...
Chapter 1 Computer System Overview
... • Extensibility: facilitates the addition of new services as well as the provision of • multiple services in the same functional area. • Flexibility: not only can new • features be added to the operating system, but existing features can be subtracted to produce a smaller, more efficient implementat ...
... • Extensibility: facilitates the addition of new services as well as the provision of • multiple services in the same functional area. • Flexibility: not only can new • features be added to the operating system, but existing features can be subtracted to produce a smaller, more efficient implementat ...
Operating Systems Introduction
... cause problems only for the one program running. if a process gets stuck in an infinite loop, this loop could prevent the correct operation of many other processes. in a multiprogramming system, one erroneous program might modify another program, the data of another program, or even the op ...
... cause problems only for the one program running. if a process gets stuck in an infinite loop, this loop could prevent the correct operation of many other processes. in a multiprogramming system, one erroneous program might modify another program, the data of another program, or even the op ...
A+ Guide to Managing and Maintaining your PC, 6e
... • Two main versions: Home Edition and Professional • Noteworthy new features: – Allows two users to logon and open applications – Incorporates Windows Messenger and Media Player ...
... • Two main versions: Home Edition and Professional • Noteworthy new features: – Allows two users to logon and open applications – Incorporates Windows Messenger and Media Player ...
chen-01
... Hiding network communication by allowing a process to call a procedure of which an implementation is located on a remote machine. When calling a such procedure, parameters are transparently shipped to the remote machine where the procedure is subsequently executed, after which the results are sent b ...
... Hiding network communication by allowing a process to call a procedure of which an implementation is located on a remote machine. When calling a such procedure, parameters are transparently shipped to the remote machine where the procedure is subsequently executed, after which the results are sent b ...
What is an operating system?
... partitions the memory for each program. If memory is insufficient, OS may use virtual memory, which allocates a portion of a storage medium to function as additional RAM In virtual memory, programs/instructions are stored in fixed-sized unit called pages If memory if full, OS will copy pages i ...
... partitions the memory for each program. If memory is insufficient, OS may use virtual memory, which allocates a portion of a storage medium to function as additional RAM In virtual memory, programs/instructions are stored in fixed-sized unit called pages If memory if full, OS will copy pages i ...
Introduction
... used by each middleware layer should be the same, as well as the interfaces they offer to applications. ...
... used by each middleware layer should be the same, as well as the interfaces they offer to applications. ...
Introduction
... Middleware Services 1. Communication facilities – message passing eg: RPC & Distributed Object Invocation. 2. Naming- URL still works even the server has been moved. 3. Persistence – special facilities for storage. 4. Distributed Transactions- multiple read/write operations atomicaly. 5. Security – ...
... Middleware Services 1. Communication facilities – message passing eg: RPC & Distributed Object Invocation. 2. Naming- URL still works even the server has been moved. 3. Persistence – special facilities for storage. 4. Distributed Transactions- multiple read/write operations atomicaly. 5. Security – ...
Slides
... operating system kernel as though they were all hardware A virtual machine 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 ...
... operating system kernel as though they were all hardware A virtual machine 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 ...
An all-in-one monolithic kernel.
... of when processes will be scheduled compared to cooperative multitasking. • The use of cooperative multitasking over preemptive multitasking can make the design of the kernel simpler. • Multitasking means that multiple processes can take turns to execute on the same CPU in such a way that it appears ...
... of when processes will be scheduled compared to cooperative multitasking. • The use of cooperative multitasking over preemptive multitasking can make the design of the kernel simpler. • Multitasking means that multiple processes can take turns to execute on the same CPU in such a way that it appears ...
Chapter 4 (b) - Jhasudan.com.np
... A disk drive is a device that either stores data or reads data from the disk, which may be a floppy or a hard disk. A PC has floppy drives, hard disk drives, and CD-ROM drives. ◦ The first floppy drive is conventionally called drive A whereas the second floppy drive is designated as drive B and the ...
... A disk drive is a device that either stores data or reads data from the disk, which may be a floppy or a hard disk. A PC has floppy drives, hard disk drives, and CD-ROM drives. ◦ The first floppy drive is conventionally called drive A whereas the second floppy drive is designated as drive B and the ...
Embedded Operating Systems Selection Guide
... centralized server. However, thin clients offer the additional advantages of a smaller footprint (offering less surface area for attacks and patching) and image lifecycle (because applications are stored on the server or PC blade, the thin client operating system does not require upgrading). ...
... centralized server. However, thin clients offer the additional advantages of a smaller footprint (offering less surface area for attacks and patching) and image lifecycle (because applications are stored on the server or PC blade, the thin client operating system does not require upgrading). ...