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one peri mdlIn the following reasoning, a timer period are quantified as the time interval between each timer underflow.This is TTimer = PWM PERIOD/PWM ResolutionTo achieve a certain PWM resolution, say N (e.g. 255), we must transfer data N (255) times within one PWM period.We'll operate the DMAC in repeat mode to generate a continuous train of PWM signal.In this mode, the whole set of data at the source address would be transferred again and again after the completion of the Previous one.Figur

reproduced in the original: http://bbs.eeworld.com.cn/thread-446834-1-1.html thank you very much. Pulse width modulation (PWM) is a method for digitally encoding analog signal levels. With the use of high-resolution counters, the duty ratio of the square wave is modulated to encode the level of a specific analog signal. The PWM signal is still digital, because at any given moment the full-amplitude DC power supply is either fully (on) or completely none (OFF). A voltage or current source is a

I heard that Yahoo launched a page in place. Very curious, looked up, also used a bit, this is not a variety of search results on a page? This is a page in place? Not confident, and continue to check ... In the end, there is no more explanation, probably the case? This reminds me of a long time ago, Yahoo China to change the pure search version of the ads, the subway is overwhelming, are some very interest

classification, so that increased the density, I also suggest that the title can modify the color and choose bold, it is best to customize the link, the General blog program can be more conducive to these keywords bold and modify the color, in fact, the link address is also the site optimization of the weight, he is reasonable, directly affect the next page to the weight. Second: The content of the homepage information, this is very important, especially the website that does not update freque

Problem Description: Retrieves the latitude and longitude information of a place name in a map based on a place namePreparation: Corresponding map service support, including map data support, ArcGIS API packCode Show:Need to introduce ArcGIS Apirequire (["Esri.task.FindTask", "Esri.task.FindParameters", "Esri.task.QueryTask", "Esri.task.Quer Y "],function (findtask,findparameters,querytask,query) {///first

1.Get the place name according to latitude and longitude [OBJC] view plaincopy on code to view the snippet derivation to my code slice clgeocoder *clgeocoder = [[Clgeocoder alloc] init]; [Clgeocoder reversegeocodelocation:newlocation Completionhandler: ^ (Nsarray*placemarks,Nserror*error) { for(Clplacemark *placemark in Placemarks) {nsdictionary*addressdic=placemark. Addressdictionary;NSString*state=[addressdic objectforkey:@"State"];NSString*city=[ad

/** Copyright and version statement of the program: * Copyright (c) 2012, Emy of computer science, Yantai University * All rights reserved. * file name: place the largest element in a 5*5 matrix in the center, and four corners with four smallest elements. cpp * Author: Mao Tong * Completion Date: July 15, January 16, 2013 * version number: v1.0 * description of the task and solution section: * input Description: Enter 25 numbers * Problem description:

the tomcat installation directory. However, Tomcat's complete server cannot be so easy. Actually, (the link will be provided at the end of the official document ): 1. Global mode: That is, logging. properties under conf in Catalina. base. You can also specify it through java. util. Logging. config. file at startup. If the file is unreadable or not configured, the file under lib under javahome will be used. 2. In the application, the default location is WEB-INF/classes/logging. properties. T

JavaScript implements a fast sorting method for the in-place idea, including javascriptin-place Fast sorting, also known as division and exchange sorting. A Fast Sorting Algorithm Based on the divide and conquer method. This article focuses on using javascript to quickly sort in-place ideas Divide and conquer law: In computer science, divide and conquer is an imp

JSONMaster_tls_version never Optimizer_costs (R)parse_gcol_expr precedes replicate_do_dbReplicate_do_table replicate_ignore_db replicate_ignore_tablereplicate_rewrite_db replicate_wild_do_table replicate_wild_ignore_tableROTATE stacked STORED (R)VALIDATION VIRTUAL (R) withoutXIDFour. Table Union queryIf there is an order by or limit keyword in a single query statement that uses a union connection, you need to enclose this single statement with parentheses. Such as:Mysql> SELECT * FROM T1 LIMIT

. Your mother reminded me: Write a letter to my daughter. Even if it's a wedding present that we gave you. Ping son, we are only the most ordinary parents, our children are only the most ordinary daughter, we do not expect too much, just hope that my children embark on the road to marriage, to life after the journey, can be full of Thanksgiving, bon voyage here, give you a life experience. First to tell you: Home is not a reasonable place. This sente

The last more than 20 days, has been in the "Henan seo" this keyword to do seo, a period of time before the second, and then I wrote an analysis of how I put this keyword to do the second, the result of this article sent to the next day, Baidu search this keyword, my blog ranked first, And it has been maintained to this day. However, in my one and a little knowledgeable customer chat, his words reminded a serious problem, he said that the general search for someone to do SEO customers do not kno

Title: There is a linear table (A1,a2,a3,..., an), using the single-linked table L storage with the lead node, an algorithm is designed to reverse its position in place, and the linear table becomes (an,... a3,a2,a1). The so-called "in-place" refers to the secondary storage space as O (1).Problem Solving Ideas:If it is sequential storage, we can easily think of a solution, using 1 auxiliary variables to exc

Find your best place to shoot The early bird catches the worm. Don't always wait until the last minute to look for a place to shoot, and know that during the whole sunset, we don't have the time to find two different directions and the perfect composition. We can choose to go out for a site visit at midday, and most photographers don't go out and shoot at this time, after all, the light conditions are not

Http://www.hankcs.com/nlp/ner/place-names-to-identify-actual-hmm-viterbi-role-labeling.htmlNamed entity recognition (Named entity recognition) is also a difficulty in natural language processing, especially in Chinese, where there are no fixed-form languages such as capitalization. Last introduced the "actual combat hmm-viterbi role labeling Chinese name recognition", this time based on similar principles, for the HANLP to achieve the Chinese address

Quick sort, also called dividing exchange sort. A fast sorting algorithm based on the method of divide and conquer. This paper is mainly about the use of JavaScript to achieve the rapid ordering of in-place ideas Divided by the rule of law: In computer science, the divide-and-conquer method is a very important algorithm model based on multiple branch recursion. The literal explanation is "divide and conquer", which is to divide a complex problem in

PHP Date_sunset () functionPHP date/time functionDefinitions and usageThe Date_sunset () function returns the sunset time for the specified date and location. GrammarDate_sunset (timestamp,format,latitude,longitude,zenith,gmt_offset) parameter descriptionTimestamp required.Format is optional. Specify how the results are returned: Sunfuncs_ret_string (returns the result in STRING format, such as 16:46)Sunfuncs_ret_double (returns the results in float format, such as 16.78243132)Sunfuncs_ret_tim

98 of us are relying on search engine to bring users and traffic, of which three-fourths or higher proportion from the Chinese first search engine-Baidu, and a small part is Google, Yahoo, Bing and so on. So after all, do the site is mainly to rely on Baidu, Baidu is what enterprises, our personal owners of the food and clothing parents. One day the search engine got angry and coughed. Our site rankings, included, the weight will be affected by not small. Baidu monthly big Update, every Thursday

Some Win8 users like to open the Web page from the system desktop, feel that this can be skipped to start the browser this step, relatively simple and quick. To do this, we can place the Web page shortcuts on the desktop, so how do we do that? How to place a page shortcut on the WINDOWS8 desktop Operation Steps: 1, open the website where you want to place the

In order to improve the weight of the site, many webmaster often use the most common exchange of high weight of friendship connection to improve their own site weight, ranking, etc., but, now a lot of webmaster in the exchange of links, many webmaster will be Baidu snapshot, Baidu Green included in favor, site, Domain Home page in the first place and so on to judge the overall standards of the site, however, some webmaster found that their own site sn