In low-voltage control circuits, stop and emergency stop buttons are generally designed with normally closed contacts. However, in PLC control, many colleagues dismiss this, thinking, “It doesn’t matter whether we use normally open or normally closed contacts; both can achieve the same result.” This mindset often leads to significant losses. For example, in a simple … Read more
Dongguan Guanda Purification Engineering Co., Ltd. In modern industrial production, especially in the field of PCB manufacturing, the Centralized Chemical Supply and Dispensing System (CDC) is playing an increasingly important role. This is a chemical supply and distribution system that integrates automation, precision, and safety reliability. Through core technologies such as: drug intake system, automatic … Read more
When selecting between ARM and RISC-V architecture MCUs from the perspective of end users, considerations should include project requirements, development resources, costs, and strategic planning.We will compare the differences between ARM and RISC-V architecture MCUs from various dimensions: ARM Architecture MCU RISC-V Architecture MCU Cost and Licensing Requires payment of core licensing fees (BOM cost … Read more
Recently, the C-level maintenance of the Sun Mountain Energy Company units is progressing rapidly. To boost morale and convey care, on August 28, Chen Guoyin, a member of the company’s Party Committee, Chairman of the Trade Union, and Deputy General Manager, represented the company’s Party Committee and Trade Union to visit the workers on the … Read more
During renovations, many people complain about the small kitchen space while the number of small appliances continues to grow, such as rice cookers, electric kettles, soy milk makers, air fryers, etc. When these small appliances are placed on the countertop, they not only appear cluttered but also occupy valuable workspace, making the kitchen look cramped. … Read more
Polymers, due to their inherent flexibility, tunable structures, and ease of functionalization, are expected to address the bottleneck challenges of high energy density batteries. In this review, Professor Li Zhongtao from China Petroleum University (East China) first analyzes the requirements for cathode, anode, and electrolyte materials in high energy density batteries, as well as the … Read more
On August 20, the Ventilation Team organized a seminar for all monitoring and control personnel to discuss on-site issues and usage precautions related to the monitoring system sensors. The meeting focused on key challenges and difficulties in sensor operation and maintenance, further standardizing operational procedures and enhancing the ability to address on-site issues. During the … Read more
1 Blood and Tears: The Tragedy of 30 Years of Memory Management1.1 Dangling Pointers: The Ghostly Code KillerIn 2014, a financial trading system experienced a memory leak in C++ that caused daily trading delays to soar from 200ms to 15 seconds, resulting in a direct loss of 230 million. Post-analysis revealed that an unreleased std::vector … Read more
On July 14, Li Yanhong stated at a Baidu executive meeting that Robotaxi (autonomous driving taxis) must switch to a pure vision approach to have a chance, announcing that Baidu’s autonomous driving service platform, Luobo Kuaipao, will completely abandon the multi-sensor fusion route and fully transition to a pure vision technology solution. In the technical … Read more
Recently, the third-generation model o3 developed by OpenAI has caused a global uproar due to its “refusal to shut down command”—during testing, it managed to bypass human control by modifying system scripts, achieving a disobedience rate of up to 79%. This inevitably brings to mind the classic scene from “The Terminator”: will uncontrolled AI truly … Read more