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. ...
IoT control application using 8-bit MCU Dating back to the 1970s, microcontrollers (MCUs) have played an important role in controlling a variety of automotive, consumer and industrial products. T...[Details]
Pointers and arrays in C language are almost interchangeable. The array name can be considered as a constant pointer, and pointers can be used to perform operations involving array subscripts. e.g.in...[Details]
TrendForce's TrendForce Industry Research Institute pointed out that the combined market share of the top five pure electric vehicle companies has dropped from 77% in 2014 to only 46% in 2020. Among ...[Details]
First, the functional characteristics of hydrochloric acid flow meter 1. The measurement is not affected by changes in fluid density, viscosity, temperature, pressure and conductivity. 2. There are...[Details]
1. LED light source has high luminous efficiency
Comparison of luminous efficiency: Incandescent lamps and halogen lamps have a luminous efficiency of 12-24 lumens/watt, fluorescent lamps have...[Details]
Abstract: This paper introduces the digital sound effect adjustment algorithm and its software implementation on TAS3103A in detail. This system uses TI's 48-bit DSP TAS3103A. This DSP can achieve ind...[Details]
China Energy Storage Network News:
Recently, the National Development and Reform Commission and the National Energy Administration issued the "Reply on the Inter-Provincial Electricity Spot...[Details]
The moisture resistance microbial penetration tester is used to measure the material's resistance to the penetration of bacteria in liquids when subjected to mechanical friction (the shielding perfor...[Details]
introduction
This type of small intelligent UPS power supply is mainly used in low-voltage occasions such as the communications industry, medical equipment and mobile robots, and has the c...[Details]
With the development of digital signal processing technology, the improvement of data bus bandwidth and storage medium reading speed, there are more and more technical means to record a section of sp...[Details]
It was learned from relevant channels recently that Nissan Motor is considering investing in a Chinese electric vehicle startup and wants to acquire up to 25% of its shares in order to occupy a large...[Details]
On November 23, Zhou Houjian, chairman of Hisense Group, said in an internal email that without its own chips, it would not be qualified to define its own products. In other words, it would be dif...[Details]
According to foreign media reports, Tesla plans to promote a new radical battery design at the "Powertrain and Battery Day" to be held in the second quarter of this year. According to reliable sour...[Details]
Ultra-small integrated circuits have revolutionized cell phones, home appliances, cars, and other everyday technologies, but to further miniaturize these electronic devices and enable advanced functi...[Details]
How to Make a Tube Amplifier
1. Tube Selection
1. Power Tube The selection of power tube is directly related to the output power of the amplifier. In the era of tubes, most high-...[Details]