There are two 8255s on the board I made for port expansion. Although I can write control words and output ports A, B, and C to the 8255 (they can jump normally), I don't know why these three ports are...
[i=s]This post was last edited by cbfasf on 2017-7-24 13:48[/i] When I first started working with circuit boards, like you, I was full of doubts and excitement. There is so much experience and knowled...
I want to draw a stm32w108 board recently. I don't know where I can buy this ceramic balun. Thank you all. I am a beginner. Please give me some advice.Thank you~~...
Problems with vs2005 connecting to CE5.0Emulator! I have read the connection steps in the forum and followed the steps! But when I reached the last few steps, when I ping CE with PC, it always says no...
There are many different ways of human-computer interaction. The more common ones are listed below:
Mouse interaction: Using a mouse to operate a computer and interact was the most common human...[Details]
Common Mode Semiconductor has officially released its latest generation of power management ICs—the GM6506 series. This fully integrated high-frequency synchronous rectification step-down p...[Details]
As the scale and business applications of national e-government networks continue to expand, the data and services transmitted over them are becoming increasingly sensitive and critical. To protect...[Details]
With the rapid development of electric vehicles in my country, people are beginning to pay attention to the issue of radiation from electric vehicles. We all know that mobile phones emit radiation,...[Details]
Normally, we determine our location and where we want to go by comparing our surroundings with observation and simple GPS tools. However, this kind of reasoning is very difficult for self-driving c...[Details]
Based on the commutation technology, thyristor rectifiers are classified into two main types. Line-commutated and force-commutated inverters are commonly used, while other commutated inverters, nam...[Details]
introduction
In today's busy society, people experience chronic high stress, which in turn poses a significant threat to our health. Therefore, effectively relieving stress has become a pr...[Details]
Generally not, but there are exceptions. For example, a torque motor controller with three-phase output voltage imbalance can cause current imbalance, similar to a phase loss. However, only two pha...[Details]
Motor potting compound is a high-performance sealing material widely used for motor encapsulation and insulation. It is essential for motor protection and packaging. Its ideal moisture and water re...[Details]
On August 19, according to foreign media Cyber Security News reported yesterday, a cybersecurity researcher discovered that hundreds of publicly accessible TeslaMate installation programs are leaki...[Details]
1. Introduction to power amplifier circuit
1. Generally speaking, the main function of a power amplifier circuit is to allow the load to obtain maximum power without distorting the signal or c...[Details]
What is the difference in response time when the output uses cyclic refresh and direct refresh?
The time required from when the PLC receives an input signal to when the PLC outputs a con...[Details]
On August 18, domestic EDA manufacturer HuaDa JiuTian launched the advanced packaging design platform Storm for the first time in the world at the end of July. It claims that the chiplet wiring eff...[Details]
The "China Electric Vehicle Charging Equipment Development Report (2024)" was compiled by the China Electric Vehicle Charging Infrastructure Promotion Alliance and Shenzhen Shenghong Electric Co., ...[Details]
Trump Says Chips Will Be Subject to a 100% Tariff, Exempting US Factories
According to CCTV News, US President Trump recently stated that the US will impose tariffs of approximately 100% o...[Details]