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1. Introduction to LOG4C
The popular log tools now include: Log4c, Log4CPP, Log4CXX, etc.
Log4cxx needs to rely on APR. Log4cpp supports C++ language. Since the project is mainly written in C, Log4...[Details]
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———————————————————————————————————————————— Matrix keyboard recognition method (row scanning method) Check the status of the column line: The column lines Y4~Y7 are set to high level, and the row...[Details]
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Non-contact temperature sensor, also known as infrared temperature sensor, is a sensor that determines the temperature of an object by measuring the infrared radiation emitted from the surface of t...[Details]
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On May 13, SMIC announced its first quarter financial report for 2021. As of March 31, 2021, SMIC's sales in the first quarter were US$1.1036 billion, a year-on-year increase of 22% and a month-on-mo...[Details]
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The output voltage of the switching power supply will decrease when the load is short-circuited. Similarly, the output voltage will increase when the load is open or unloaded. In maintenance, the dum...[Details]
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According to foreign media reports, researchers from the Oregon State University College of Engineering have developed a battery negative electrode using a new nanostructured alloy that may revolutio...[Details]
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The displayed average noise level (DANL) sensitivity of a spectrum analyzer is -172dBm/Hz, which is only 2dB away from the theoretical thermal noise limit of -174dBm. What kind of black technology do...[Details]
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According to the Ningbo Economic and Information Technology Bureau, the first ArF photoresist production line of Ningbo Nanda Optoelectronic Materials Co., Ltd. has officially started production. A...[Details]
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1. Introduction With the rapid development of the automobile industry, more and more people own private cars, and there will be more and more traffic problems. Among them, safe reversing is one of t...[Details]
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As important components for intelligent driving, 4D millimeter-wave radar and laser radar are advancing in parallel in the radar field. However, there are still differences in the technical routes ...[Details]
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Accurate testing is the eternal pursuit goal of almost all engineers’ testing work. But this is no easy task, especially for small signal measurements. For example, semiconductor devices, materials, ...[Details]
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Working principle and solution
Current situation:
With the rapid development of national economic construction, port business is becoming increasingly active. Whether it is an inla...[Details]
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Good news from the Chilean market! Recently, Sungrow signed a 400MW supply agreement with ENEL, the Italian National Electricity Company, to provide 1500V solutions for Chile's largest photovoltaic...[Details]
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Not long ago, the European Commission formally proposed a bill to unify the charging interfaces of consumer electronic devices such as smartphones, tablets, digital cameras, headphones, portable spea...[Details]
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Preface With the improvement of living standards, the demand for intelligent furniture has gradually emerged, and the application of data collection such as temperature and humidity has also begun to...[Details]