從結構上來說，實時多任務操作系統包括兩部分，一部分為操作系統內核(kernel)，即實時執行程序(Real Time Executive:RTX)，另一部分是輸入輸出部分(I/O)(注意開發系統不屬于操作系統的范疇)；嵌入式系統對I/O的需求通常比較小(無文件系統需求)，因此很多實時多任務操作系統本質上就是一個實時執行程序，如AMX(Kadak)，VRTX(Microtec)，iRMX(Intel)等(這里的X即:eXecutive)，如果純粹從kernel的角度來考察目前流行的各種實時多任務操作系統的性能，它們的效率差別都不大。 在市面上可以得到一些RTX的源代碼(有用C實現的，有用匯編實現的，還有用PL/M語言實現的)，從internet上也可以蕩一些下來(我介紹一個站點www.eg3.com，堪稱世界電子工程師資源寶庫)，下面我要介紹的一個RTX版本(我命名為SRTX:short RTX)，可以說是RTX中的元老級產品了，來自某研究所，九十年代初他們到美國考察，從美國某公司購得。五年以前，SRTX在國內有售，許多搞工控的研究所利用SRTX開發了一些大型或小型的產品,這里介紹的SRTX我作了一些簡化和改動.
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上傳時間： 2015-12-09
上傳用戶：wang5829
Example to support XML files using MSXML. ========================================= XML (Extensible Markup Language) is a commonly used basis for representing a huge range of structured data file formats. The specification is maintained by the World Wide Web Consortium (W3C?. This plugin is intended as an example of how XML data can be read with a DataPlugin. You can adjust it to meet the needs of your own XML file format. After installing the URI file (double click on it), you can find the VBScript file located at "C:\Program Files\National Instruments\Shared\USI\plugins\DataPlugins\XML Example" You can make changes to this file to read your specific XML file.
標簽： XML Example support Extensi
上傳時間： 2016-01-03
上傳用戶：cooran
This book shows how to design and implement C++ software that is more effective: more likely to behave correctly more robust in the face of exceptions more efficient more portable makes better use of language features adapts to change more gracefully works better in a mixed-language environment is easier to use correctly is harder to use incorrectly. In short, software that s just better.
標簽： more effective implement software
上傳時間： 2016-01-04
上傳用戶：huyiming139
％ ％ set some variables in the workspace to control behaviour: ％ ％ graphicsMode 0 no graphics, ％ 1 graphics, particles, beacons, ground truth ％ 2 graphics, as above + range circles ％ ％ perfect 0 use beacon range data ％ 1 use ground truth range data ％ clear a
標簽： graphicsMode behaviour variables workspace
上傳時間： 2014-01-10
上傳用戶：yiwen213
TRAFFIC LIGHT CONTROLLER using C51 and RTX-51 tiny，This program is a simple Traffic Light Controller. Between start time and end time the system controls a traffic light with pedestrian self-service. Outside of this time range the yellow caution lamp is blinking.
標簽： CONTROLLER TRAFFIC LIGHT using
上傳時間： 2013-12-27
上傳用戶：123456wh
很全的中斷手冊。 INT 00 - CPU-generated - DIVIDE ERROR INT 01 - CPU-generated - SINGLE STEP (80386+) - DEBUGGING EXCEPTIONS INT 02 - external hardware - NON-MASKABLE INTERRUPT INT 03 - CPU-generated - BREAKPOINT INT 04 - CPU-generated - INTO DETECTED OVERFLOW INT 05 - PRINT SCREEN CPU-generated (80186+) - BOUND RANGE EXCEEDED INT 06 - CPU-generated (80286+) - INVALID OPCODE INT 07 - CPU-generated (80286+) - PROCESSOR EXTENSION NOT AVAILABLE INT 08 - IRQ0 - SYSTEM TIMER CPU-generated (80286+) . . .
標簽： CPU-generated INT DIVIDE SINGLE
上傳時間： 2013-12-27
上傳用戶：aa54
This cookbook contains a wealth of solutions to problems that SQL programmers face all the time. Recipes inside range from how to perform simple tasks, like importing external data, to ways of handling issues that are more complicated, like set algebra. Each recipe includes a discussion that explains the logic and concepts underlying the solution. The book covers audit logging, hierarchies, importing data, sets, statistics, temporal data, and data structures.
標簽： programmers solutions cookbook contains
上傳時間： 2013-12-08
上傳用戶：Altman
This program is a simple Traffic Light Controller. Between start time and end time the system controls a traffic light with pedestrian self-service. Outside of this time range the yellow caution lamp is blinking.
標簽： time Controller Between program
上傳時間： 2016-01-23
上傳用戶：iswlkje
16 relay output channels and 16 isolated digital input channels LED indicators to show activated relays Jumper selectable Form A/Form B-type relay output channel Output status read-back Keep relay output values when hot system reset High-voltage isolation on input channels(2,500 VDC) Hi ESD protection(2,00VDC) High over-voltage protection(70VDC) Wide input range(10~50VDC) Interrupt handling capability High-density DB-62 connector Board ID
標簽： channels indicators activated isolated
上傳時間： 2016-02-15
上傳用戶：dongbaobao
Foreword The four case studies that follow each have a number of common features. They each illustrate the birth of an idea and show how that idea can be realised into a marketable product. Each case study deals with engineering design and development issues and each highlights the importance of developing sound marketing strategies including market research. The importance of appropriate support mechanisms for young entrepreneurs is also covered. The case studies illustrate how successful entrepreneurs deploy a range of entrepreneurial skills and know-how. Above all, the entrepreneurs are seen to have the capacity to innovate and exercise vision. We are grateful to Liz Read, Development Manager for Enterprise and Entrepreneurship (Students) at Coventry University for providing these case studies.
標簽： each Foreword features studies
上傳時間： 2016-02-17
上傳用戶：熊少鋒
