accurate protractor

is based on customer demand to profit, therefore, customer analysis is crucial. For example, if you're a real estate salesman, when you're distributing flyers, how do you know that people around age 30 and around 45 are more likely to buy a home, some say it's experience. But in fact this is only considering the customer age this one factor, if is at the marketing level, aimed at the customer thousands, we must consider not only the age, but also the income level, the education situation, the c

Yesterday evening test 32cube Configuration Good timer, to 1ms for an interrupt, and then in the program to do a 1s delay, the results found that the actual delay 5s around, think of no solution, carefully review the cube configuration also no problem. Finally I opened the generated project folder inside the IOC file, only to find the actual clock configuration problem, I configured 72M, the result is actually only 16M, but I new IOC configuration is definitely 72M, so it may be stm32cube softwa

This article mainly introduced the PHP accurate computation function, combined with the example form analysis PHP carries on the accurate method for subtraction and so on mathematics operation, involves Bcadd, bcsub, Bcmul, bcp and so on function's use skill, needs friend can refer to the next Introduction: Be sure to ensure the accuracy of your data. This is the basic accomplishment of a good programmer.

is as follows [5]. Hardware timer interrupt (generated by the Programmable interrupt Timer-pit)Tick_periodic ();Do_timer (1);Update_wall_time ();-Timekeeping_update (TK, false);-Update_vsyscall (TK); update_wall_timeThe time of clock source is used, and the accuracy can reach the NS level.However, the general Linux kernel time interrupt is 100HZ, High also has 1000HZ, that is to say this time is usually in 10ms or 1ms interrupt processing update once.From the operating system point of

From: Microsoft 7b7m General Formula: partition size = (partition size-1) × 4 + 1024 × partition size if according to the above hard disk partition formula (X-1) * 4 + 1024 * x = y where X is the value of the integer partition you want, in the unit of G, and Y is the number you should enter in the partition, in the unit of M. According to the calculation method: 5G = 5136 MB 10g = 10276 MB 15g = 15416 MB 20g = 20556 MB 30g = 30836 MB 40g = 41116 MB 30g, enter the above data. For example, if you

Tags: des style blog HTTP ar SP data 2014 log Original, reprinted please indicate the source! Thank you! In actual work, the customer requires that the information be filtered out at the specified time point. That is, if a piece of information is set to be published at, the data will not be filtered out before. In fact, the requirement is very simple. Add a filtering condition in the designer to set the release time to be less than or equal to the current time. However, when using the designe

Frontier: Because of the nature of the work of the relationship, I will be exposed to a lot of very senior mobile developers. Most technical Engineer-born CEOs are very sensitive to the intellectual property of the technology itself. the "KK prophecy" article puts forward the idea that "when owning intellectual property is not guaranteed to be profitable, the ability to have accurate and only information push is the guarantee of future profit of APP

Keymob is a mobile ad management tool designed for Android and iOS developers, designed to help developers maximize ad revenue. App push based on ad aggregation to help apps quickly expand the number of users. At the same time we combine a number of advertising platforms, green Channel services, for the vast number of developers to serve.It is understood that Keymob mobile ad aggregation platform through a simple one-stop operation on the Web page, can be through the platform cloud server to dis

The JS file introduced today in the use of bootstrap errors syntax error on token "Invalid Regular Expression Options", no accurate correc;The approximate meaning is the invalid expression or something, the concrete solution is as follows:1, select the error JS file or error content.2. Right-click to select Myeclipse-->exclude from Validation.3, then right-click Myeclipse-->run Validation can be selected.This article refers to http://www.cnblogs.com/j

Accurate conversion of time field values obtained by Dynamics CRM form Javascript This article continues the previous blog article to continue the time field conversion experiment. This article describes how to obtain and update the time field in the form Javascript, and whether the conversion in time is required, first look at the time field value obtained through ODATA Of course, you can see that the format cannot be used directly. You need to c

This series of tutorials is dedicated to the quick learning of Android development, in accordance with the project approach, usually an article will do a small program. Improve your interest in learning.On the one hand to summarize their own income, on the other hand can help more study colleagues through their own sharing.Because of the coherence of knowledge, it is recommended to study in a twinkling. Directory Links: http://www.chengxiaoxiao.com/bozhu/1336.htmlThis tutorial by today's headlin

This article mainly introduces JS accurate access to the current page URL information of a variety of methods, including regular method, split split method, the need for friends can refer to the nextIn web development, JavaScript is often used to get URL information for the current page, and here is a little summary of some of my URL information.Here we give an example of a URL, and then get its various components: Http://i.cnblogs.com/EditPosts.aspx?

Fast, accurate Detection of 100,000 Object Classes on a once read recordsThis article is CVPR best paper. This article of cattle, mainly reflected in some key figures, can be classified into 100000 categories, 20,000 times times faster than base line. However, the drawback is that its stand-alone processing of an image of the speed, need 20s, and, 100000 class map is 0.16, looks beautiful, but there are some distance practical distance. This article'

Get System Current TimeWhen debugging, log output, and code optimization, we often need to get the system time. In some performance-demanding code optimization, the accuracy of time is also relatively high. On the internet to find a high-quality code, they have studied, the code is as follows (to meet cross-platform requirements, units accurate to microseconds):#ifdef _WIN32#include #else#include #endif//_WIND32Defining 64-bit shaping#if defined (_WIN

In the process of using cocos2d-x, want to calculate time difference, such as Touchbegin and touchend click Time difference, need to get the current times, this time is usually used to obtain, return unit is time_t on the iOS platform looked down, That is, long, which is the number of seconds starting from January 1, 1970. But this time is not very accurate, can only be accurate to the second. If you wan

parts: exponent and mantissa, such a method of expression will generally lose a certain degree of precision, some floating-point operations will produce a certain error. For example, the binary representation of 2.4 is not exactly 2.4. Instead the nearest binary representation is 2.3999999999999999. The value of a floating-point number is actually computed by a particular mathematical formula. In fact, the Java float can only be used for scientific calculations or engineering calculations, in m

Copy Code code as follows: Call: Accadd (ARG1,ARG2) return value: Arg1 plus arg2 's exact result function Accadd (ARG1,ARG2) { var r1,r2,m; Try{r1=arg1.tostring (). Split (".") [1].length}catch (e) {r1=0} Try{r2=arg2.tostring (). Split (".") [1].length}catch (e) {r2=0} M=math.pow (10,math.max (R1,R2)) Return (arg1*m+arg2*m)/M } Copy Code code as follows: Description: JavaScript subtraction results will be error, in two floating-point numbers added

Last time I published a component that writes custom debug information (mainly time) in a record file, but because of the limitations of the CLR, it can only be accurate to about 10 milliseconds. I later referred to an article on the Web: http://blog.joycode.com/lostinet/archive/2005/04/24/49590.aspx (Thanks to the original author here first) gets a time record that can be accurate to about 1 milliseconds b

For Baidu and Google's differentiated optimization, I believe that a lot of stationmaster have their own experience, today, I also hope to share some of their experiences in A5. To come to the point, first of all we have to discuss is Google and Baidu for accurate matching distinction, I am doing English site, my site is the VOA online keyword listening, the VOA official website, then we look, Baidu and Google on the two keywords different ways of tr

relevant words of cooking. Chairman Mao said good: "The countryside surrounds the city, each and all." Do not underestimate the power of long tail words! For, the new station should not, the egg touches the stone, must Shini. Especially in the critical moment to clarify the idea. Strength must be spent on the blade. The weight of your site, slowly rise up, to attack the popular words are relatively easy to point. 　Four, fully understand the industry's light season, to finalize keywords. Each