hardware operating systems and networking requirements

... Systems and File Management 18 DOS Disk Operating System First operating system that many used Chapter 4: Operating Systems and File Management 19 Handheld Operating Systems Chapter 4: Operating Systems ... Chapter 4: Operating Systems and File Management 10 The Boot Process Chapter 4: Operating Systems and File Management 11 SECTION Today’s Operating Systems B Microsoft Windows Mac OS UNIX and Linux ... Windows Mac OS UNIX and Linux DOS Handheld Operating Systems Chapter 4: Operating Systems and File Management 12 Microsoft Windows Chapter 4: Operating Systems and File Management 13 Mac OS You...

Ngày tải lên: 06/03/2014, 09:21

... Preface Operating Systems research is a vital and dynamic field Even young computer science students know that Operating Systems are the core of any computer system and a course about Operating Systems ... accommodate the evolving requirements of new hardware and new user applications The other force requires an operating system that is fast enough to keep pace with faster hardware and faster communication ... Cataloging-in-Publication Data Advanced operating systems and kernel applications : techniques and technologies / Yair Wiseman and Song Jiang, editors p cm Includes bibliographical references and index Summary: "This...

Ngày tải lên: 19/03/2014, 13:32

... databases [7] New systems are being designed [4, 11], and companies such as Google, Microsoft and Amazon made these designs into commercial systems that are operating tens of thousands of computers ... depend on state of system, but in closed systems, the total number of customers is fixed Many systems can be studied as both open systems and closed systems, and the decision depends on the purpose ... billions of objects, fault tolerance and failover, and high throughput of both read and write The traditional storage and database system may become awkward for handling all these, thus new approaches...

Ngày tải lên: 13/10/2015, 15:55

... foreground and background narratives, in same way as the fg and bg console commands can swap UNIX foreground and background processes,3 a background narrative can always create an “interrupt,” demanding ... story of military arrogance; and, (e) a deteriorating situation at base command, where demands on men and equipment may mean a shortage of relief troops, ground vehicles, and helicopters On their ... actors, and scenarios were played out under the invisible control of a (human) wizard An agent command interface and two-way radios closed the behavior loop, giving the wizard control over agents and...

Ngày tải lên: 16/03/2014, 17:20

... Windows Operating System It holds commands that allow window moving, resizing, and switching to other applications The File menu provides commands for loading, merging and saving work files and libraries, ... menu contains the commands to check, format and solve the equation set The Tables menu contains commands to set up and alter the contents of the Parametric and Lookup Tables and to linear regression ... work files and libraries, and printing The Edit menu provides the editing commands to cut, copy, and paste information The Search menu provides Find and Replace commands for use in the Equations...

Ngày tải lên: 30/05/2014, 10:12

... for instance n, Padapted,n-1 stands for the current instantaneous estimation and parameters whist and winstant reflect the weights attributed to the historical and the current instantaneous estimation, ... Secretariat of Research and Technology (GSRT) of the Greek Ministry of Development and evolved in the context of the OneFIT (Opportunistic networks and Cognitive Management Systems for Efficient ... 3rd Central and Eastern European Conference on Multi-Agent systems, ed by V Marík, JP Müller, M Pechoucek 3rd International/Central and Eastern European Conference on MultiAgent Systems, Prague,...

Ngày tải lên: 20/06/2014, 20:20

... network operating systems and distributed operating systems (Tanenbaum and Van Steen, 2002) In a network operating system, the users are aware of the existence of multiple computers and can log ... occur in physics and engineering They were largely programmed in FORTRAN and assembly language Typical operating systems were FMS (the Fortran Monitor System) and IBSYS, IBM's operating system ... makes a similar point about operating systems being dinosaurs [Page 11] Despite its enormous size and problems, OS/360 and the similar third-generation operating systems produced by other computer...

Ngày tải lên: 12/08/2014, 22:21

... interrupt handling, the low-level mechanics of managing context switches between processes (saving and restoring registers and the like), and low-level parts of manipulating the MMU hardware By and ... interactive systems, especially timesharing systems and servers, different goals apply The most important one is to minimize response time, that is the time between issuing a command and getting ... used in batch systems In the following ones we will examine interactive and real-time systems It is worth pointing out that some algorithms are used in both batch and interactive systems We will...

Ngày tải lên: 12/08/2014, 22:21

... of the current status of each handler in a list For each function in the list, intr_handle sets the corresponding bit in irq_actids, and calls the handler If a handler has nothing to or if it ... first a look at clock hardware and software in general, and then we will see how these ideas are applied in MINIX 2.8.1 Clock Hardware Two types of clocks are used in computers, and both are quite ... a significant fraction of the total operating system Thus to really understand what an operating system does, you have to understand how I/O works How the operating system manages I/O is the...

Ngày tải lên: 12/08/2014, 22:21

... a CPU and memory and contain software, usually in ROM From the operating system's viewpoint, the main difference between a glass tty and an intelligent terminal is that the latter understands ... keyboard.c, and console.c, all of which are large files, When a user logs in on the system console, a shell is created for him with /dev/console as standard input, standard output, and standard error ... written for other hardware and other operating systems to be easily ported to MINIX There are two categories of escape sequences: those that never contain a variable parameter, and those that may...

Ngày tải lên: 12/08/2014, 22:21

... be chosen by the operating system Even if the hardware has been designed with, for example, 512-byte pages, the operating system can easily regard pages and 1, and 3, and 5, and so on, as 1-KB ... into that partition and run until it terminates However, nowadays, few, if any, operating systems, support this model, even on mainframe batch systems [Page 377] 4.1.3 Relocation and Protection Multiprogramming ... another and with the operating system itself An alternative solution to both the relocation and protection problems is to equip the machine with two special hardware registers, called the base and...

Ngày tải lên: 12/08/2014, 22:21

... Modern operating systems not make this distinction All their files are automatically random access 5.1.5 File Attributes Every file has a name and its data In addition, all operating systems ... N, D, and F in that order Their respective load times were 18, 23, 5, 7, 32, 19, 3, and Their reference bits are 1, 0, 1, 1, 0, 1, 1, and and their modified bits are 1, 1, 1, 0, 0, 0, 1, and 1, ... system, but all current operating systems allow strings of one to eight letters as legal file names Thus andrea, bruce, and cathy are possible file names Frequently digits and special characters...

Ngày tải lên: 12/08/2014, 22:21

... MINIX file systems, it may also be useful for exchanging files Other operating systems may use older MINIX file systemsfor instance, Linux originally used and still supports MINIX file systems (It ... a standard UNIX i-node The disk zone pointers are 32-bit pointers, and there are only pointers, direct and indirect The MINIX i-nodes occupy 64 bytes, the same as standard UNIX i-nodes, and there ... issues Security and protection are of vital concern to both the system users and system designers We discussed some security flaws in older systems, and generic problems that many systems have We...

Ngày tải lên: 12/08/2014, 22:21

... interrupt controller: 08101 * put_irq_handler: register an interrupt handler 08102 * rm_irq_handler: deregister an interrupt handler 08103 * intr_handle: handle a hardware interrupt 08104 * intr_init: ... save interrupted process state */;\ 06517 push (_irq_handlers+4*irq) /* irq_handlers[irq] */;\ 06518 call _intr_handle /* intr_handle(irq_handlers[irq]) */;\ 06519 pop ecx ;\ 06520 cmp (_irq_actids+4*irq), ... save interrupted process state */;\ 06568 push (_irq_handlers+4*irq) /* irq_handlers[irq] */;\ 06569 call _intr_handle /* intr_handle(irq_handlers[irq]) */;\ 06570 pop ecx ;\ 06571 cmp (_irq_actids+4*irq),...

Ngày tải lên: 12/08/2014, 22:21

... process Among other things, it defines the text, data 17602 * and stack segments, uids and gids, and various flags The kernel and file 17603 * systems have tables that are also indexed by process, with ... manager and some related 18001 * procedures When MINIX starts up, the kernel runs for a little while, 18002 * initializing itself and its tasks, and then it runs PM and FS Both PM 18003 * and FS ... ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 20400 /* This file handles the system calls that get and set uids and gids 20401 * It also handles getpid(), setsid(), and getpgrp() The code for each 20402 * one is...

Ngày tải lên: 12/08/2014, 22:21

... Computing and Imaging, an interuniversity graduate school doing research on advanced parallel, distributed, and imaging systems In the past, he has done research on compilers, operating systems, networking, ... networking, and local-area distributed systems His current research focuses primarily on computer security, especially in operating systems, networks, and large wide-area distributed systems Together, ... the ACM, a Fellow of the the IEEE, and a member of the Royal Netherlands Academy of Arts and Sciences He is also winner of the 1994 ACM Karl V Karlstrom Outstanding Educator Award, winner of the...

Ngày tải lên: 12/08/2014, 22:21

... abstraction layer work in a modern operating system; the difference between a monolithic and a microkernel operating system; and how policy and mechanism are separated in modern operating systems Concurrency and Threads Chapter 4 motivates and explains the concept of ... To get good performance and acceptable reliability, both application writers and operating systems designers must understand how storage devices and file systems work This chapter and the next three discuss the key issues: ... recursivebooks.com Operating Systems: Principles and Practice (Second Edition) Volume IV: Persistent Storage by Thomas Anderson and Michael Dahlin Copyright ©Thomas Anderson and Michael Dahlin, 2011-2015...

Ngày tải lên: 09/05/2016, 09:54

... Energy and Power Requirements of AC Systems Purpose for Energy Measurement Three-Phase Energy and Power Measurement  Purpose for Energy Measurement  Revenue Raising   Planning and design requirements ... all motors and transformers are correctly loaded Over-exciting a synchronous motor Adding capacitance to an installation (that is inductive) 20/02/17 Nathan Condie 10 Energy and Power Requirements ... between supply voltage and current – for the purpose of determine tariff level Nathan Condie 21 Three-Phase Energy and Power Measurement 20/02/17 Nathan Condie 22 Three-Phase Energy and Power Measurement...

Ngày tải lên: 20/02/2017, 13:16

... Introduction to Network Operating Systems (NOS)     Coordinating Hardware and Software Multitasking Software Components Choosing a Network Operating System Network Server Local ... Novell Operating Systems    Introduction to NetWare NetWare Services Interoperability NetWare Security    Logon Security Trustee Rights Directory and File Attributes Microsoft Network Operating ... (CSNW) File and Print Service for NetWare (FPNW) Directory Service Manager for NetWare (DSMN) Migration Tool for NetWare 12 Other Operating Systems        AppleTalk Network Operating System...

Ngày tải lên: 15/05/2017, 14:44

... reply to one command and enters the next command People often refer to this as think time • System response time: The time span between the moment the user enters a command and the moment a complete ... extensively commented and appropriately structured to allow your peers to understand and easily maintain the code Properly commented and laid out code is much easier to interpret and it is in your ... times of the various processes, the efficiency of the scheduling and context switching mechanisms, and the nature of the I/O demand and the performance of the I/O subsystem Nevertheless, we attempt...

Ngày tải lên: 16/05/2017, 09:41