Lpc17xx using an internal crystal (Internal RC oscillator) as the clock source

In general applications (not using USB, the accuracy requirements are not high) the LPC17XX series in addition to using external crystals, the internal 12MHZ crystals can also be used as the oscillator source. In fact, before running the

Xtreme Toolkit Pro Several Chinese issues when statically linking to MFC

Xtreme Toolkit Pro15.3.1 (previous version may also have this problem) after a Chinese-language package, if you choose to statically link to MFC, create a new project, (1) If it is a single document project, run the program with an error (2) If it

What is the difference between HashMap and Concurrenthashmap, Concurrenthashmap thread-safe, concurrenthashmap How to ensure thread safety?

the difference between HashMap and Concurrenthashmap. 1. HashMap is non-thread-safe and Conurrenthashmap is thread-safe. 2. Concurrenthashmap the entire hash bucket is segmented segment, that is, the large array is divided into a few small

Jenkins + TestNG Automated test Platform for self-service

Summary:This article describes how to use Jenkins and TestNG to implement a "self-service" automated test platform that meets the needs of complex testing. Based on Jenkins as a platform, the program combines powerful plug-ins and system

Solutions for GC overhead limit exceeded appear

"An internal error occurred during:" Build project "occurs when I create a MAVEN project using the Myeclispe IDE. GC overhead limit Exceeded ", just beginning to think I clean a bit, and then restart MyEclipse on it, and later found not so. Since

matlab-base logical operator is not equal to

Compassion Ji Shan Learning, technology is willing to learn. Good-hearted quick to build much better, walnuts after the cool. I am here to write the experience, willing to see the text to inspire. ~= This is not equal to the number, C

Amusing those MIME headers in the HTTP protocol

HTTP protocol is our most commonly used protocol, we surf the Internet through the browser, download the file, upload the data a lot of it is used, but I used to it is mengmengdongdong, gradually, I have some sentiment, so it is recorded here. This

method and analysis of modifying start-up parameters in U-boot start-up stage

Author: Wai Bu This is not a complicated thing to start with, but to be simple and clear, I really don't know how to organize it. After all, words are different from sound language. I hope the simple things don't make me talk too complicated. ARM

stm8s PWM Application Breathing lamp

Main function Accept: Using the MCU STM8S105C6 PWM Channel 2 PC2 to do the breathing light has been verified OK, ah//Ah, this PWM setup just started with a little trouble, because it is their own groping, take some time, or conquer. The child

Process Note 2: Communication between processes (Unix domain socket socket)

The address data structure of the socket has different forms depending on the system and the network environment. In order for the different format addresses to be passed into the socket function, the address structure must be forced to be converted

Echarts Chart Development Pie chart

In the related background system development, there is an essential module is the chart theme analysis. Through the chart analysis, it can show the development status of the business and the proportion of each business more intuitively, which is

Codeforces 191C Fools and Roads tree chain split

Title: Http://codeforces.com/problemset/problem/191/C Test instructions: Given a tree, there are N nodes n-1 the edge, and then each given two nodes, two points on the path edge of the right plus 1 (the initial edge of 0), and then output each side

"Docker registry construction process and its usage instructions"

1. Docker command:A.docker PS: List all running containers: B.docker ps-a: List all containers (including sleeping mirrors) C.docker Images: Lists the image images that are owned on the local host: D.docker run:run mysql:1.docker Run--name

"An operating system implementation"--pmtest1.asm detailed

Segment mechanism for easy experienceMemory Addressing:memory addressing in real mode:Let's start by reviewing the addressing in real modeSegment Header Address x16+ offset = Physical AddressWhy should x16. Because in 8086CPU, the address line is 20

Learning theory Experience risk minimization--andrew ng machine Learning notes (vii)

Content Summary To now supervised learning has basically finished, this blog is mainly to write about the theory of machine learning, that is, when to use what learning algorithm, what kind of learning algorithms have what characteristics or

Thoroughly parse hash table algorithm from beginning to end

Source: Researcher July Description: This article is divided into three parts, the first part of a Baidu face question top K algorithm, the second part is about the hash table algorithm detailed elaboration; The third part is to create a fast

SVN log file display time is 1970-01-01 No data----------Final Solution

svn

This issue occurs primarily in the setup of Anon-access access permissions in the Svnserve file. If Anon-access = None, follow the comments in the document: Prohibit all anonymous access, that is, if the user is not open access in authz-db, is not

The relationship between Cu,tu,pu in hevc-i frames

Here is mainly combined with HEVC decoding end I frame to explain, wherein the p,b frame is basically not too large, mainly PU also exist irregular situation on p frame is not sure After a clear analysis, then add The relevant concepts of the coding

10 big mistakes in agile development

10 big mistakes in agile development Original: Http://www.computerweekly.com/opinion/The-top-10-myths-about-agile-development Author: Peter Measey Translator: Zhang Sb er http://blog.csdn.net/xinxing__8185/article/ Absrtact: For the rapid

Neural network activation function and loss function

activation function sigmoid output Layer For the output layer to be sigmoid, if the mean square error function is used, then the neural network may have a "very large error and slow learning" situation, because the loss function on the partial

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