Hall devices are magnetic sensors based on the Hall effect. They have developed into a diverse family of magnetic sensor products and have been widely used. This article briefly introduces their worki...
[size=4]Refer to [url]https://bbs.eeworld.com.cn/thread-445979-1-1.html[/url] and write a helloworld driver. When downloading to the development board and executing the insmod command, the following e...
Application of centralized temperature and humidity monitoring system for warehouses, workshops, and office environmentsPart 1 Temperature and Humidity Monitoring Solution
1. Application Overview Toda...
The function I want to achieve is to encrypt all files copied into the USB drive. I want to capture the write operation in the filter driver, but I am confused about the kernel operation process of co...
I created a program in the EVC environment. After the program was modified and compiled successfully, when I later modified a program in a .cpp file, I slightly changed the program. There was nothing ...
I'm using UDP to test the data transmission rate, transmitting a random array in an infinite loop, without using an operating system. The maximum speed is only 500K bytes per second. The same test usi...
With the promotion of the construction of intelligent communities in the country, anti-theft systems have become essential equipment for intelligent communities. Especially in recent years, the urg...[Details]
China's new energy vehicles are in a transition period from research and development to real industrial development. In 2012, with the intensive launch of new energy vehicle policy planning, the de...[Details]
introduction
The emergence of high-performance, low-power embedded CPUs and high-reliability network operating systems has made it possible to implement applications with large amounts of comp...[Details]
1. What is temperature?
Heat is a type of molecular motion. The hotter an object is, the faster its molecules move. Absolute zero is defined as the temperature at which all molecular motion ...[Details]
I. Introduction
Since RS232 has a short communication distance (only 15 meters according to EAT/TAI-232 standard), and can only perform point-to-point communication, it cannot directly f...[Details]
1. System Structure
This system is a simulation system of indoor air-conditioning temperature/humidity control system. The data acquisition and control center collects temperature/humidity...[Details]
1 Introduction
Water resources are the basic conditions for human survival and the lifeline of economic development. The reality shows that due to the global shortage of water resources and th...[Details]
Digital array radar (DAR) uses digital beam forming (DBF) in both receiving and transmitting modes to achieve flexible distribution and reception of RF signal power in the airspace, obtain excellent t...[Details]
The concept of state machine
State machine is an important concept in software programming. More important than this concept is its flexible application. In a clear and efficient program, ther...[Details]
TC9012F is a universal CMOS large-scale integrated circuit for infrared remote control signal transmission, suitable for remote control of TV, VTR, laser player and other equipment. In the market, ...[Details]
We know that the inverter consists of two parts: the main circuit and the control circuit. Due to the nonlinearity of the main circuit (switching action), the inverter itself is a source of harmoni...[Details]
With concerns about the growing energy crisis, motor efficiency has become an important and timely topic. This is because motors use 63% to 70% of the electricity produced in the United States and ...[Details]
LED lighting: Basic circuit design can be completed in as little as one day
Semiconductor manufacturers are also getting involved in the LED lighting business. The power circuit of LED req...[Details]
At present, a large number of cooling tower fans, speed fans and special fans are in use in petroleum, chemical, pharmaceutical, metallurgical and other enterprises. Some fans have no monitoring in...[Details]
PCB Design
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