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This paper presents a design of a high-precision automatic resistance tester with STC89C54RD as the control core. The system range is 10Ω to 10MΩ, with the functions of automatic range switching and...[Details]
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Special power supply is a special type of power supply. The so-called special is mainly because the technical indicators of the power supply are different from those of the common power supply, wit...[Details]
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Time measurement usually refers to the measurement of the time parameters of a signal, such as the signal's period, pulse width, rise time, and fall time. The specific method of measuring time parame...[Details]
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People often encounter this problem when using spectrum analyzers: When performing spectrum analysis tests on signals, why are the power level readings different for different spectrum analyzer setti...[Details]
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Apple's Pro Display XDR has been released for some time. In terms of price, the standard glass version is priced at 39,999 yuan, and the Nano-texture glass version is priced at 47,999 yuan. Th...[Details]
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1 Introduction Intelligent measurement has been widely used in various industries . The measured data can be exchanged with the host computer through the serial port or through the USB port after be...[Details]
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On May 20, Anker Innovations said on its investor interaction platform that the recent steep decline in freight rates to the United States indicated that, judging from the results of its 2021 operati...[Details]
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The fans currently sold on the market mainly connect the speed controller and the fan body through wires, and the speed controller is often fixed on the wall when in use, which mak...[Details]
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1 Introduction Embedded system is the product of the combination of advanced computer technology, semiconductor technology, electronic technology and specific applications in various industries. It i...[Details]
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1 Introduction In China, the booming development of wireless and mobile communications requires more spectrum resources, which makes the spectrum precious and crowded. In order to distinguish it ...[Details]
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1. What is a matrix keyboard? A matrix keyboard is a keyboard group with a matrix-like layout used in the external devices of a single-chip microcomputer. Since more external inputs are needed in cir...[Details]
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South Korea's informationization level and e-government level are both in a leading position. In recent years, the electronic procurement system and management model have begun to be exported to coun...[Details]
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In the past, in order to fully profit from the white light LED beam, LED manufacturers have developed large-size LED chips in an attempt to achieve their expected goals. However, in fact, when the ...[Details]
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describe:
ADC0832 digital voltmeter digital tu...[Details]
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With the development of the LED display market, full-color SMD lamp beads will gradually become the mainstream light-emitting devices for outdoor displays in the future. In the process of outdoor...[Details]
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