More content can be found in the Linux system knowledge base package (tutorials + videos + Q&A): Linux System Knowledge Base Package Article Directory 1. Setup Stage: Transaction 1.1. Token Packet 1.2. DATA0 Data Packet 2. Explanation of Optional Data Stage Packets 3. Explanation of Status Stage Packets Control transfer consists of three stages: setup … Read more
✅ Author Introduction: A research enthusiast and Matlab simulation developer, skilled in data processing, modeling simulation, program design, obtaining complete codes, reproducing papers, and research simulation. 🍎 Personal Homepage:Matlab Research Studio 🍊 Personal Motto: Seek knowledge through things, complete Matlab code and simulation consultation content via private message. 🌿 For past reviews, you can follow … Read more
Hello everyone, I am Xiao Xi. Today we are going to talk about how to use Siemens PLC to build a smart environmental monitoring system, focusing on achieving efficient collection and transmission of sensor data. It sounds a bit complex, but don’t worry, I will guide you step by step in the simplest way possible. … Read more
RS232 and RS485 are common interfaces in low voltage applications. Many friends have mentioned the differences between them, so today let’s learn about them together. 1. Physical Structure of the Interfaces 1. RS232 Interface: One of the computer communication interfaces, RS-232 interfaces typically appear in the form of 9 pins (DB-9) or 25 pins (DB-25). … Read more
Introduction to RS-232 Serial Port Data transmission between computers or between a computer and a terminal typically employs two methods: serial communication and parallel communication. Serial communication is widely adopted due to its lower cost and fewer lines used, especially in remote transmission, which avoids inconsistencies caused by multiple lines. In serial communication, both parties … Read more
What Is USB? USB is a universal serial bus interface standard used to connect computer systems and external devices for data transmission and power supply. Advantages: High-Speed Transmission: The USB interface provides high-speed data transfer rates, suitable for quickly transferring large volumes of data. Hot Swappable: USB devices can be plugged and unplugged while the … Read more
Using LoRaWAN for firmware over-the-air upgrades (FOTA) is quite challenging. Currently, the LoRa Alliance has not mentioned much on this topic, although it can be implemented in Class B and Class C devices. The reasons why firmware over-the-air upgrades using LoRaWAN are difficult include: 1. The communication of the base station cannot occur simultaneously. This … Read more
Background Having been in a long-distance relationship with my girlfriend for over a year, I suggested that we video chat every night to maintain our feelings. Since we started dating, we have managed to keep this up for over a year. Problem Sometimes during our chats, either my network or hers might be unstable, causing … Read more
Click the “Learn Algorithms in Five Minutes” above and choose the “Star” public account Heavy content delivered first Source: Juejin, Author: Ruheng Link: https://juejin.im/post/6844903490595061767 1. TCP/IP Model The TCP/IP protocol model (Transmission Control Protocol/Internet Protocol) includes a series of network protocols that form the foundation of the Internet and is the core protocol of the … Read more
Currently, there are many network protocols built on the TCP protocol, such as telnet, ssh, ftp, http, etc. These protocols can be roughly divided into two categories based on data throughput: (1) Interactive data types, such as telnet and ssh. These types of protocols usually only do small-scale data exchanges, such as pressing a key … Read more