Programmer Group

1, Related technology . 1.1 about SPI protocol SPI protocol is a communication protocol (Serial Peripheral Interface) proposed by Motorola, that is, serial peripheral The standby interface is a high-speed full duplex communication bus. It is widely used between ADC, LCD and MCU, Occasions requiring high communication rate. SPI physical layer S ...

Dear, Hello, I'm "front-end Xiaoxin", 😇 He has been engaged in front-end development and Android development for a long time, is keen on technology, and goes farther and farther on the road of programmingpreface:It's strange to say that there are some "pseudo programmers" in many technical communication groups. For example, ...

1, I2C bus protocol 1.1 what is the I2C protocol I2C communication protocol (Inter Integrated Circuit) is developed by Phiilps company. Due to its few pins, simple hardware implementation and strong scalability, it does not need external transceiver equipment of USART, CAN and other communication protocols. Now it is widely used in the co ...

Single linked list 1. Definition of linked list Chain storage structure of linear table: the location of data elements (nodes) in linear table in memory is arbitrary, that is, logically adjacent data elements are not necessarily adjacent in physical location. Related terms: Nodes: storage images of data elements. It consists of data ...

Finish the leetcode interview of large factory algorithm 8. Sliding windowVideo tutorial (efficient learning): Click to learncatalog:1. Introduction2. Time and space complexity3. Dynamic planning4. Greed5. Binary search6. Depth first & breadth first7. Double pointer8. Sliding window9. Bit operation10. Recursion & divide and conquer11 Pr ...

Article catalog         1. Bubble sorting         2. Select Sorting         3. Insert sort         4. Merge and sort         5. Quick sort   1, Bubble sorting Basic idea: In a group of numbers to be sorted, compare and adjust t ...

This paper introduces how to use Canal to realize asynchronous and decoupled architecture. Later, I will write an article to analyze the principle and source code of Canal.Introduction to CanalCanal is a middleware used to obtain database changes.Disguise yourself as a MySQL slave database, pull the main database binlog, analyze and process it. ...

Title Description Please realize one   myAtoi(string s)   Function to convert a string into a 32-bit signed integer (similar to the atoi function in C/C + +). ​ function   The algorithm of myAtoi(string s) is as follows: ​ Read in the string and discard useless leading spaces Check whether the next character (assuming it has n ...

Introduction to Express Node (official name: Node.js) is an open source, cross platform runtime environment. With it, developers can use JavaScript to create various server-side tools and applications. This runtime is mainly used outside the browser context (that is, it can run directly on the computer or server operating system). Accor ...

Addition, deletion and modification of data processing 1, Insert data 1.1 practical problems Solution: use the INSERT statement to INSERT data into the table. 1.2 mode 1: add VALUES Using this syntax, only one piece of data can be inserted into the table at a time. Case 1: insert data in the default order for all fields of the table ...