google android operating system

The Duality of Memory and Communication in the Implementation of a Multiprocessor Operating System

Ngày tải lên : 12/09/2012, 15:05

... University Pittsburgh, PA 15213 Appeared in Proceedings of the 11th Operating Systems Principles, November, 1987 Abstract Mach is a multiprocessor operating system being implemented at Carnegie-Mellon University. ... Collins and L.W. Loen. System/ 38 Machine Storage Management. IBM System/ 38 Technical Developments, IBM General Systems Division :63-66, 1978. [7] Gupta, A. Parallel Production Systems. PhD thesis, ... November, 1984. [9] Kahn, K.C. et al. iMAX: A Multiprocessor Operating System for an Object-Based Computer. In Proc. 8th Symposium on Operating Systems Principles, pages 127-136. ACM, December, 1981. [10]...

23
1.3K
1

Tổng quan về Operating System

Ngày tải lên : 18/03/2013, 16:48

... này là hệ điều hành sau này. 1.23 Một số khái niệm của hệ điều hành(tt)  Sự phân lớp hệ thống (System Layering) – Mỗi người sử dụng khác nhau yêu cầu khai thác hệ điều hành ở những mức độ khác...

62
499
3

Operating system

Ngày tải lên : 03/08/2013, 01:26

... Warm up A. Look at the diagram What is the function of the operating system? The function of operating system is to control a computer, manage the function of the computer, and...

7
419
0

Programming the Be Operating System-Chapter 9: Messages and Threads

Ngày tải lên : 17/10/2013, 19:15

... dealt mostly with system messages—messages generated and dispatched by the system. The Message Protocols appendix of the Be Book defines all the system messages. In short, system messages fall ... BClipboard object that is used to access the systemwide clipboard. 330 Chapter 9: Messages and Threads BClipboard class The previous section described the system s application roster, the be_roster ... carry out the message’s action. That leads to the distinc- tion that a system message is usually handled by a hook function (some system- generated messages, such as the standard messages resulting...

37
541
0

PHẦN 2: HỆ ĐIỀU HÀNH (OPERATING SYSTEM)

Ngày tải lên : 19/10/2013, 18:15

... 12 CPU P1 P2 P3 P4 P1 P2 P4 P1 0 4 8 11 15 19 23 24 - 1 - PHẦN 2: HỆ ĐIỀU HÀNH (OPERATING SYSTEM) Chương 1: Tổng quan Hệ điều hành 1 Câu hỏi Tóm tắt chức năng của hệ điều hành ... thống tập tin (File System) . 4. Quản lý nhập xuất (I/O). 5. Quản lý thiết bị lưu trữ (Secondary-storage). 6. Quản lý mạng (Networking). 7. Hệ thống bảo vệ (Protection System) . 8. Hệ thông ... Không gian đ/c Bộ nhớ Bộ nhớ phụ Chương 4: Quản lý hệ thống tập tin (File system management). 41 Câu hỏi Tóm tắt tổ chức đĩa mềm 1.44 MB sử dụng FAT12 2 điểm Đáp án Tổ...

27
844
17

Programming the Be Operating System-Chapter 10: Files

Ngày tải lên : 20/10/2013, 10:15

... Files POSIX,orPortable Operating System Interface for Unix, is a standard developed so that buyers (particularly the U.S. government) could be assured of purchasing programs that ran on a variety of systems ... Using Standard Open and Save Panels 361 Using Standard Open and Save Panels An operating system with a graphical user interface typically provides standard- ized means for opening ... strict standard so that it is easily ported. It’s also designed to run on any POSIX-compliant operating system, which includes most variants of Unix. File Organization The BeOS, like the Mac OS,...

18
405
1

Realtime Operating Systems

Ngày tải lên : 23/10/2013, 22:15

... multitasking operating system. At that time, the system had already reached its limits, and the operating system had shown some serious ﬂaws. It became apparent that at least the operating system called ... embedded systems, however, the cost increase would be enormous. So the performance of the operating system has signiﬁcant impact on the costs of embedded systems, especially for single-chip systems. For ... perceived by the user: today’s operating systems consume even more memory and CPU performance than technological development can provide. So the more advanced the operating system, the slower the applications. One...

212
524
1

Operating System Structures Cấu trúc Hệ điều hành

Ngày tải lên : 28/10/2013, 09:15

... some systems store the operating system in ﬁrmware, and others on disk? Tại sao một số hệ thống lưu trữ hệ điều hành trên firmware, còn một số khác thì lưu trên đĩa? 2.13 How could a system ... người dùng. 2.10 What is the purpose of system calls? Mục đích của system call là gì? 2.11 What are the main advantages of the microkernel approach to system design? Lợi ích chính của phương ... bất lợi của việc sử dụng phương pháp phân tầng là gì? 2.9 List ﬁve services provided by an operating system. Explain how each provides convenience to the users. Explain also in which cases it...

2
912
4

o'reilly learning the UNIX operating system

Ngày tải lên : 25/11/2013, 11:07

114
438
1

Tài liệu Microsoft® Windows® 2000 Network and Operating System Essentials ppt

Ngày tải lên : 09/12/2013, 17:15

... network operating system. Just as a computer cannot operate without an operating system, a network of computers cannot operate without a network operating system. Every network operating system ... network operating system s manufacturer, a desktop computer’s networking software can be added either to the computer’s own operating system or be integrated with it. Network operating system ... mathematical calculation. A network operating system must also support multiple processors, clusters of disk drives, and data security features. Finally, a network operating system must be reliable and...

360
461
0

Tài liệu A+operating system technologies doc

Ngày tải lên : 11/12/2013, 14:15

... hardware is compatible with the new operating system, and that the hardware sources (including memory) in your system is sufficient for the new operating system. QUESTION NO 25 Where would ... Control panel, system, performance, graphics. B. Control panel, system, display settings, graphics. C. Control panel, system, device manager, properties, graphics. D. Control panel, system, hardware ... - 18 - QUESTION NO 43 How can you get a point out of the system configuration on a Windows 9x operating system? A. From the system monitor, click the print button. B. From the device...

107
448
1

Tài liệu CompTIA A+ Operating System Technologies docx

Ngày tải lên : 11/12/2013, 15:15

... (re)creating file systems • [drive letter] /S – makes the drive bootable (system) FDISK – For (re)creating partitions (see below) Cramsession : CompTIA A+ Operating System Technologies ... Computer System Interface settings for SCSI controllers, tape drives (if you have a SCSI host adapter) • Services - starts, stops and pauses various services • System - system startup settings, system ... A+ Operating System Technologies TM © 2000 All Rights Reserved – BrainBuzz.com 26 • Defrag – defragments a hard drive • System Monitor is a Windows utility that tracks system...

93
925
3

Tài liệu THE OPERATING SYSTEM MACHINE LEVEL-6 docx

Ngày tải lên : 12/12/2013, 09:15

... hardware) Context Valid Physical page Virtual page tag Flags (b) (c) Format is entirely defined by the operating system Translation table (Operating system) TSB (MMU + sofware) Context Entry 0 is shared by all virtual pages ending ... process Children of A Grandchildren of A A A A A A A Figure 6-43. A process tree in UNIX . 6 THE OPERATING SYSTEM MACHINE LEVEL 1 (b) Time Process 3 Process 2 Process 1 Process 3 Process 2 Process 1 Process ... files close(infd); close(outfd); Figure 6-36. A program fragment for copying a file using the UNIX system calls. This fragment is in C because Java hides the low-level system calls and we are trying to expose them.  API...

45
526
0

Tài liệu Realtime Operating Systems docx

Ngày tải lên : 13/12/2013, 11:15

... multitasking operating system. At that time, the system had already reached its limits, and the operating system had shown some serious ﬂaws. It became apparent that at least the operating system called ... embedded systems, however, the cost increase would be enormous. So the performance of the operating system has signiﬁcant impact on the costs of embedded systems, especially for single-chip systems. For ... performance of the operating system is poor, the CPU needs to be operated at higher frequencies, thus consuming more power. Consequently, the system needs larger batteries, or the time the system can...

212
425
1

Tài liệu Activity 9.1: Identify Operating System Requirements pdf

Ngày tải lên : 21/12/2013, 06:16

... 9.1: Identify Operating System Requirements In this activity, you will first identify the optimal operating system to use in a given situation. Next, you will analyze the operating system selection ... Objectives After completing this activity, you will be able to: ! Identify the appropriate operating system for a given set of requirements and constraints. Before You Begin This activity ... complete this activity: 15 minutes followed by a 10 minute discussion. Activity 9.1: Identify Operating System Requirements 63 Exercise 2: Analyzing Technology Selection (5 minutes) ! Analyze...