[size=4] The 50Hz AC sampling signal V1 is sent to the inverting input pin 6 of the active precision detector composed of pins 5, 6, and 7 of R1, R2, D1, and U. The purpose of using an active precisio...
I am a newbie who is learning about matrix keyboards recently, but the hardware circuits I have are more complicated than usual. The usual scanning ideas don’t seem to work. Below is my circuit diagra...
Please help me!!! The idea is: short-circuit any two USB wires to print a letter on the screen. Difficulty: 1. How to write a program on the PC using VB and C++. 2. What are the books on this topic?...
Hello everyone! I disassembled a power supply board produced by another company, and I was curious about the craftsmanship in one place. It was the first time I saw it. What is the green layer next to...
[table=98%] [tr][td] I need to purchase a batch of sensors (temperature and humidity sensors, pressure sensors, flow meters, etc.) for a scientific research project. They are mainly used to measure pi...
[size=4][color=#000000][backcolor=white]1. If both the interrupt and the main thread need to access the same variable, the interrupt should be turned off before accessing it in the main thread, and tu...
Today's computer peripherals are pursuing high speed and high versatility. In order to meet user needs, seven companies led by Intel launched the USB (Universal Serial Bus) bus protocol in 1994, wh...[Details]
With the rapid development of science and technology, especially the widespread application of digital technology and various ultra-large-scale integrated circuits, electronic equipment, especially...[Details]
At present, the traffic congestion in cities is quite serious. According to relevant news reports: In China, the traffic congestion has expanded from megacities such as Beijing, Shanghai, and Guang...[Details]
When choosing a laptop battery, you should consider several factors, such as power, appearance, and quality.
Regarding power, we often see that a manufacturer uses values such as the number ...[Details]
The solidification and modularization of intelligent video analysis algorithms are the current trends in the application of intelligent video analysis technology. It perfectly combines intelligent ...[Details]
In the previous series, we have listed some basic knowledge of C language in Tables 1 to 3. We hope that beginners can strengthen their memory of the above tables and gradually learn to use them wh...[Details]
introduction
MAX6636 is a multi-channel precision temperature monitor that can not only monitor local temperature, but also connect up to 6 diodes externally. Each channel has a programmable...[Details]
Liquid crystal display (LCD) panels have a wide range of applications, from small portable electronic devices to large fixed devices, including digital cameras, laptops, personal data assistants, d...[Details]
0 Introduction
In order to improve the automation control of shortwave transmitters, so that they can automatically process from far to near, the technicians here use the ICS system to complete the ...[Details]
When the so-called "copycat phones" that flood the domestic mobile phone market move towards large screens, stereo amplifiers, touch controls, and even GPS navigation and mobile TV, the homogeneity...[Details]
The future energy storage hotspot is not coal or iron ore, but lithium. This lightest metal in nature may be the heaviest resource in the future energy landscape. China launched an ambitious electr...[Details]
1 Introduction
Power supply ripple will interfere with the normal operation of electronic equipment, causing malfunctions such as computer crashes, data processing errors and control system fa...[Details]
In the TV monitoring system, in order to complete the collection of information from various information points (video, audio, alarm signal) and the control of various front-end devices (PTZ, lens,...[Details]
UDN2916LB is a two-phase stepper motor bipolar driver integrated circuit launched by SANKEN. It can drive dual-winding bipolar stepper motors and is particularly suitable for controlling dual-step ...[Details]
With the rapid development of information technology represented by computers, semi-physical simulation technology plays an important role in many military and civilian fields such as aerospace and co...[Details]