The parent process can be notified by a signal, but many parent processes want to know more information about the termination of the child process - such as the return value of the child process. If t...
Basic Concepts The specific matching relationship between the load impedance and the internal impedance of the signal source during signal transmission. A certain relationship should be satisfied betw...
I modified the AT89S51 microcontroller to control the GSM module (M22) to send SMS program. It has been compiled on Keil, but I haven't tried to burn it into the chip to run it. . Let's take a look. I...
First of all, I'm using M430F149. I followed the method at http://www.microcontrol.cn/bbs/a/a.asp?B=112&ID=9201&E=1&EID=69&RootID=16594&q=1&r=16594 and there was no problem when the space used was les...
This article describes some of the issues with well-known hardware-based security vulnerabilities and what can be done to mitigate them.
Electromagnetic side channel attacks
Researchers have known abo...
On August 25th, SK Hynix announced that it has completed development and entered mass production of its 321-layer, 2Tb QLC NAND flash memory product. This achievement marks the world's first applic...[Details]
1. Multi-channel DAC technology bottleneck
Currently,
the development of multi-channel DAC technology focuses on two core challenges.
First, industrial applications urgently ...[Details]
A multilevel inverter converts a DC signal into a multilevel staircase waveform. Instead of a straight positive-negative output waveform, the output waveform of a multilevel inverter alternates in ...[Details]
Inverter power supplies on the market can generally be divided into two categories: sine wave inverters and square wave inverters. Some engineers also like to categorize pure sine wave inverters as...[Details]
A pure sine wave inverter has a good output waveform with very low distortion, and its output waveform is essentially the same as the AC waveform of the mains power grid. In fact, the AC power prov...[Details]
At present, the most troubling thing about pure electric vehicles as new energy sources is not only the range anxiety, but also the disadvantage of long charging time. At present, ternary lithium b...[Details]
In recent years, with the development of MOSFETs, they have gradually replaced transistors in the low-power, fast-switching industry. Major manufacturers in this field have also been reducing their...[Details]
Electronic devices are small individual components in electronic circuits. Transistors are common electronic components. Because of their wide range of applications, according to the usage of the e...[Details]
According to the latest financial report data, thanks to its leading position in advanced technology, TSMC's profit performance in the second quarter of 2025 was extremely impressive, with net prof...[Details]
Compared to gasoline-powered vehicles, electric vehicles have a simpler structure, allowing for greater flexibility in the layout of various components. While electric and gasoline-powered vehicles...[Details]
The power battery is a crucial component for vehicles, determining its lifespan and range. According to national regulations, when the capacity of an electric vehicle's power battery drops below 80...[Details]
Shock absorbers, as the name implies, are responsible for cushioning and absorbing shocks in a car. So how much do you know about shock absorbers and how to replace them in electric cars?
...[Details]
The field of AI is constantly evolving. We are witnessing a profound shift from the era of "generative AI" to the era of "agent AI." This transformation has the potential to reshape industries an...[Details]
Recently, Shenzhen Ruixin Intelligent Medical Technology Co., Ltd. (hereinafter referred to as Ruixin Medical) released a fully automatic AI vascular interventional surgical robot, marking the begi...[Details]
Abstract:
Electronic rearview mirrors offer advantages over traditional mirrors in intelligent connected vehicles, leading them to gradually replace them. However, their emergence also increa...[Details]