The forum has discussed the -48V issue of communication power supply many times. There have been discussions in the past. The most recent discussion is this post [url=https://bbs.eeworld.com.cn/forum....
Installed tmake 1.11 qt/Embedded2.3.7 QT2.3.2for x11 environment is redhat9 with built-in qmake3.1 version. I found that the examples under qt/E can be loaded into qvfb for running. The examples under...
I am a beginner. I want to learn MCU, so I bought a learning board. I brought some learning materials and now I share them with friends who are also planning to get started with MCU. I hope it will be...
This is my first time developing for Windows CE, and I am using eBox. I need to port OpenCV to Windows CE. In addition to http://blog.csdn.net/hellogv/archive/2010/07/08/5721129.aspx , is there any in...
I have a simple question. In the amplifier circuit in the figure, Vout=-(Rf/R1)*Vin. I don't understand how R1 and Rf are generally chosen. If the amplification is 100 times, according to the formula,...
[i=s]This post was last edited by chenzhufly on 2014-9-30 17:30[/i] [b][size=10.5pt]1[/size][/b][b][size=10.5pt]、 Installation environment[/size][/b][color=#6D6D6D][/color] [size=10.5pt]Linux[/size][s...
Images in science fiction movies often break through the limits of reality, such as in the movie "Minority Report." Tom Cruise uses a multi-touch screen to browse information. Capacitive sensing te...[Details]
From the PIC16F946 datasheet, we know that there are two ways to write values to the LCD for display:
1. Directly write the value to LCDDATA1~LCDDATA23
2. Use disconnect t...[Details]
Xiaomi, a well-known Internet phone in mainland China, won a million-unit order contract from China Unicom on November 20 last year, which made Xiaomi famous in mainland China. In April this year...[Details]
Among the many members of the single-chip microcomputer family, the MCS-51 series of single-chip microcomputers has occupied the main market of industrial measurement and control and automation eng...[Details]
From the previous section, we have learned that the timer/counter in the microcontroller can have multiple uses, so how can I make them work for the purpose I need? This requires setting the timer/...[Details]
Capacitors
are basic components in various electronic devices and are widely used for bypassing, coupling,
filtering
, tuning, etc. in electronic circuits. However, to use capacitors,...[Details]
0 Introduction
High-precision current source can provide high-precision current supply for precision instruments, and is suitable for automatic measurement tasks of various resistors in semico...[Details]
With the rapid development of wireless
digital communication
, more challenges have been raised for integrated circuit design and testing. In the product design stage, in order to ensure
t...[Details]
The launch of Shenzhou IX is imminent, and Tiangong is welcoming visitors again. Yesterday, Professor Fu Qiang, Vice President of the Institute of Science and Industrial Technology of Harbin Instit...[Details]
Introduction
Today, as IC (integrated circuit) has developed to a super-large scale, IC design based on IP (Intellectual Property) cores and their reuse are important means to ensure the ef...[Details]
introduction
At present, the research on micron and nanotechnology is very active, which has led to the rapid development of microtechnology and micro-mechanical electronic system (MEMS) t...[Details]
Zarlink Semiconductor has developed an ultra-low-power RF transceiver chip for pacemakers, neurostimulators, drug pumps, and other such implantable medical devices. It has high data rates, low power c...[Details]
Direct digital frequency synthesis (DDS) has fast frequency switching and modulation capabilities and is widely used. However, when low power consumption and low cost are the main considerations, D...[Details]
1. Advantages of CAN-bus in coal mine communication
Coal mine production is a field closely related to the national economy and people's livelihood. Among them, coal mine safety is undoubtedly ...[Details]
Since the first rechargeable battery was invented in 1859, batteries have been developed for a century and a half. With the improvement of human science and technology and the advancement of manufa...[Details]