Code for calculating check codes under MOdBUS RTU

CrcCheck AlgorithmShift MethodUnsigned Short CRC16 (Unsigned char *pbuf,int nlength){Unsigned short wreturn = 0xFFFF; for (int ndatalen=0;ndatalen{wreturn^= (unsigned short) (BYTE (Pbuf[ndatalen])); for (int nindex=0;nindex{if

[MSSQL] using pivot function to implement dynamic row to column

Environmental requirements: 2005+In daily needs, there are often rows of things to do, if not dynamic rows, then we can take the case when the list of processing.When dealing with dynamic rows or columns before SQL 2005, it is usually done by

SOLR Simple Database data synchronization (to be continued)

Originally in other companies responsible for the document retrieval module maintenance (meaning is not I developed it). So we have a little contact and research on the following document retrieval.Document retrieval is a full-text search, which is

Ubuntu 14.04 nvidia graphics driver installation and setup

Replace motherboard repair Grub Boot, unable to enter the system from NVIDIA (cursor blinking), may be the graphics card driver is out of the question.1. Enter BIOS settings and enter the system from integrated graphicsConnect the monitor to the VGI

HDU 4417 Super Mario (segment tree + dynamic Array)

Super MarioTime limit:2000/1000 MS (java/others) Memory limit:32768/32768 K (java/others)Total submission (s): 2685 Accepted Submission (s): 1306Problem Descriptionmario is world-famous plumber. He "burly" figure and amazing jumping ability

Win8 64-bit under MyEclipse 10.x custom JVM could not be started by workaround

The recent period of time in Win8 64 began to popularize, and other reasons, many children's shoes are beginning to use WIN8;My machine is a brand of notebook, because of the so-called genuine, it has been used win8, but also slowly accustomed to,

Windows8 run zxing source code generation and decoding two-dimensional code detailed (including annotations and illustrations can be run directly)

1 Downloads zxing2.12 This Code configuration environment: Eclipse, java1.6, Windows8, zxing2.13 after extracting the folder inside Core/src the following COM folder into the Eclipse project (the project can be built on its own, such as QRCode),

Research on creating a three-tier architecture development model and three-tier architecture with vs2010

Research on layer-3 Architecture   Concept of three-tier architecture User Interface presentation layer (USL) Business logic layer (BLL) Data access layer (DAL) Bll separates usl from dal and adds Business Rules  Role of each

Starstar conference room system and office365 integration description

In this article, we will introduce how to configure office365 so that the system can support the starstar conference room booking system. In this article, we will introduct how to config Microsoft office365 to enable it to support dotnetcms.org book

Explore Scala (8) -- keywords

This article compares the keywords of Java and ScalaJava keywords Java has a total of 50Keywords(Keywords), Two of which areReserved Words, Not used yet:GotoAndConst.True,FalseAndNullIt looks like a keyword, but it's actually justLiteral. This

Activereports report control getting started in Chinese (3)-How to Select page reports and regional reports

Zookeeper This article describes common use cases, differences, and suggestions for selecting report types for regional reports and page reports, template design and data sources for the two reports (both at design time and runtime) the difference

Chinese character storage format in SIM card

Ucs2 format in SIM card The text in the SIM card is stored in the ucs2 format. ucs2 and Unicode are only in different byte order, Unicode is a small header, and ucs2 is a big header. The widechartomultibyte and multibytetowidechar functions in VC

Replacegooglecdn: replace Google CDN with domestic

Chrome Web store installation address:Https://chrome.google.com/webstore/detail/replace-google-cdn/kpampjmfiopfpkkepbllemkibefkiice As we all know, you only need to replace a domain name to continue using the front-end public library provided by

How to implement priority queue based on rabbitmq

Overview For various reasons, up to now, rabbitmq has not implemented a priority queue, but only implemented priority processing for consumer. However, for various reasons, Priority Queues are required at the application layer, so the requirement is:

Atitit. Gui button and panel --- project scale Evaluation ---- number of files statistics, structure, number of lines of code, number of lines of each type of files.

Atitit. Gui button and panel --- project scale Evaluation ---- number of files statistics, structure, number of lines of code, number of lines of each type of files.   1. KPI: number of lines of code (number of lines commented, number of blank lines)

5-3 constructor of multi-level derived classes

5-3 constructor of multi-level derived classes Time Limit: 1000 ms memory limit: 65536 K Description Define a data member of the base class protected: Name sex (char type); a constructor is used to initialize data members. Employee: Add two basic

[Linear algebra] solutions to linear equations

The previous article describes the solution of Ax = 0 and the zero space of matrix,Here we will discuss the solution of Ax = B and the column space of matrix.Ax = 0 is certainly a solution, because the total existence of x is the whole zero vector,

List linked list: Delete a node list_del from the linked list

Delete a node from the linked list using the list_del interface. Pay attention when using list_del.The list_del implementation is as follows:Static inline void list_del (struct list_head * entry){_ List_del (entry-> prev, entry-> next );Entry-> next

VS2008 adds a response function to the icon toolbar-status bar

1. Add the following red code to the OnInitDialog () function in the dialog box:BOOL CGSM_MessageDlg: OnInitDialog (){CDialog: OnInitDialog (); // Set the icon in this dialog box. When the application main window is not a dialog box, the framework

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