There was no problem using ssh before, but there was a problem after updating to ubuntu20. I will record the problem now.
All the articles on the Internet say that there is a PermitRootLogin in /etc/s...
After watching the live broadcast review, if you have any questions, you can post them in the thread and Guanzi will help feedback to Xianji officials for answers.Live broadcast time: 20:00-21:00 on J...
1. IntroductionUsing MixPY and MixNO development board hardware and MixPY software platform, we will give full play to the computing power of AI K210 chip, introduce the concept of machine vision, sta...
[i=s]This post was last edited by Niubility-a on 2018-12-17 11:55[/i] [align=left]Android system architecture[/align][align=left]Android system architecture is the architecture of the Android system. ...
According to foreign media MySmartPrice, real photos of realme Buds Air 3 true wireless earphones have been exposed. This earphone is the successor of realme Buds Air 2, with a smaller charging...[Details]
DRAM (Dynamic Random Access Memory) is particularly attractive to designers because it provides a wide range of performance and is used in the design of memory systems for various computers and embe...[Details]
According to Korean media etnews, in response to further export controls imposed by the United States, Huawei is investigating the US technology content of its supply chain and seeking other alternat...[Details]
It has long been an industry consensus that traditional liquid lithium batteries will not be the technological end of power batteries, and solid-state batteries are the only way forward in the post-l...[Details]
Hi-Fi power amplifier circuit (with BOM)
This is a simple low cost
power amplifier
. You can implement it in 5 ways, as indicated in the diagram (from 20W to 80W RMS).
Notes:...[Details]
On February 27, Prolutong (002769) issued an announcement on its proposed overseas investment to establish a holding subsidiary. The company plans to jointly invest with Guangdong Sodium One New En...[Details]
On August 26, the first batch of DC smart street lamp projects, a multifunctional composite pole demonstration project led by State Grid Xiong'an New Area Power Supply Company, was launched at the ...[Details]
For a long time, single-chip microcomputers have not had their own special bus standards, and they are usually designed by well-known manufacturers when launching their own products. For example, th...[Details]
What is a maglev train?
Maglev trains are a new type of transportation consisting of contactless electromagnetic suspension, guidance and drive systems. Maglev trains are divided into two ...[Details]
In June 2022, Aixinyuanzhi Semiconductor (Shanghai) Co., Ltd. was named the 2021 strategic supplier of Zhejiang Dahua Technology Co., Ltd. (hereinafter referred to as Dahua Technology). Shi Xin, vice...[Details]
According to the Science and Technology Innovation Board Daily, the supply chain has reported that benefiting from the strong demand for power semiconductors such as automotive MOSFETs and the full c...[Details]
Maxim Integrated Products has introduced a high-performance dual UHF/VHF low-noise amplifier in a 0.86mm x 0.86mm, 4-pin wafer-level package.
August 2005, September 22, 2010, Maxim Integrated Pro...[Details]
Recently, CREE announced on its official website that it has completed the sale of its lighting products business unit "Cree Lighting" to IDEAL INDUSTRIES, Inc. The transaction includes LED l...[Details]
1. We can divide the specific manufacturing process of LED packaging into the following steps:
1. Cleaning steps: Use ultrasonic cleaning to clean the PCB or LED bracket and dry it.
2. M...[Details]
On the afternoon of October 9, 2024, China Sodium Energy Storage Technology Co., Ltd. (hereinafter referred to as "China Sodium Energy Storage") was invited by Northwest Nonferrous Geology and Mini...[Details]
Integrated technical exchanges
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