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1. Introduction
At present, with the continuous development of modern medical devices, especially electronic instruments directly connected to the human body, in addition to the increasingly high...[Details]
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The circuit shown in the figure is a three-digit tachometer used to measure low frequency signals with a repetitive time interval of 0.235 to 15 seconds. The tachometer has a speed range of 4 to 255 r...[Details]
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With the advancement of computer technology, the development of image processing and pattern recognition methods, fingerprint processing technology has become more mature and has been widely used i...[Details]
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Conventional ECG recorders are one of the main means for doctors to diagnose heart diseases, but they can only record short heartbeats. In many cases, it is difficult to record ECG changes during a...[Details]
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In some warehousing management, manufacturing, meteorological observation, scientific research and daily life, the requirements for temperature and humidity are common. For example, the "Interim Pr...[Details]
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Abstract: Based on the research of the communication process between the reader and the RFID tag, combined with the EPC C1G2 protocol and ISO/IEC18000.6 protocol, a digital circuit of RFID tag appl...[Details]
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Lithium-ion batteries have a high energy-to-weight and energy-to-volume ratio, no memory effect, can be recharged many times, have a long service life, and are becoming increasingly cheaper. A good...[Details]
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In the future, a complete automobile safety system must fully combine gyroscopes, accelerometers, steering wheel and brake pedal position detectors, and tire speed detection systems to accurately ...[Details]
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introduction
The data detected by various measuring instruments often need to be transferred to the PC for data processing and archiving, so as to make full use of the rich hardware and softwa...[Details]
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Among the many candidate standards for China's mobile TV, the CMMB standard proposed by the Broadcasting Science Research Institute of the State Administration of Radio, Film and Television is aime...[Details]
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Introduction With the continuous development of economy, people's demand for automobiles is increasing day by day. Correspondingly, automobile consumer groups are becoming more and more mature. It...[Details]
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In recent years, the development of automotive electronic technology has significantly improved vehicle safety performance. One of the technologies that is expected to be widely used is the tire p...[Details]
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Introduction
With the rapid development of modern computer technology and Internet technology, embedded systems have begun to occupy the mainstream of the market. Due to the high ...[Details]
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When it comes to ATX power supply, people will think of two "classic" ICs: pulse width modulation chip TL494 and voltage comparator LM339. The new dedicated control chip AT2005B has the functions ...[Details]
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0 Introduction
With the continuous progress of society and the improvement of people's living standards, environmental protection and energy conservation have received more and more attention....[Details]
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