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Earlier we introduced a simple universal character device driver. Next, we will implement the GPIO query key function based on it.
Attach the driver code first
1 /****************...[Details]
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According to foreign media reports, researchers from Toyohashi University of Technology in Japan have successfully prepared a non-bonded tin phosphide (Sn4P3)/carbon (C) composite thin film electrode...[Details]
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Dynamic strain gauge principle It is also generally called resistance strain gauge. There are wired strain gauges, foil strain gauges, semiconductor strain gauges, etc. The strain gauge, whose re...[Details]
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As the weather gets colder, the way the north and south spend the winter has become a hot topic and people talk about it. Although the north is particularly cold, because there is heating, it can s...[Details]
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In 2020, a new round of power system reform entered its fifth year. In accordance with my country's goal of establishing a market system reform with "laws to rely on, separation of government and e...[Details]
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Photodiode
The structure of a silicon photodiode is similar to a PN junction diode except that the P layer is very thin. The thickness of the P layer is adjusted to suit the wavelength...[Details]
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On November 27, 2019, the Zhongguancun Integrated Circuit Design Park Industrial Service Platform (IC-PARK ISP) was officially launched, marking the successful launch of Beijing’s first service platf...[Details]
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Semiconductor lighting technology is one of the most promising high-tech fields in the 21st century, and light emitting diodes ( LEDs ) are its core technology. Light emitting diodes are a type of ...[Details]
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A method of interconnecting industrial fieldbus and Ethernet is proposed. The design and implementation of a protocol conversion gateway between Ethernet and CAN fieldbus are introduced. AT89C55 (＄1...[Details]
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On November 2, the RISC-V Industry Ecological Base of Zhongguancun Integrated Circuit Design Park (IC PARK) was unveiled. The base was initiated and established by IC PARK and Corelai Technology, a...[Details]
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On June 10, the penultimate round of the preliminary round of the 2021 "Core Power" competition "Finding Good Chinese Projects and Gathering Chinese Core Power" came to a successful conclusion. This ...[Details]
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Recently, Jianghai Shares said in an institutional survey that the orders for film capacitors in the automotive, wind power and photovoltaic sectors have grown rapidly. Film capacitors are currently ...[Details]
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If you've ever been undecided about what color car to buy, BMW may have the car for you. The German automaker unveiled "electronic ink" technology at the 2022 Consumer Electronics Show in Las Vegas, ...[Details]
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1. Experimental tasks Use the timer/counter T0 of the AT89S51 microcontroller to generate a one-second timing time as the second counting time. When one second is generated, the second counting incre...[Details]
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Here is an overview of the pros and cons of these motors:
1. Advantages:
(1) Low cost:
Two-phase permanent magnet (PM) stepper motors are generally less expensive than similarly size...[Details]
Wireless Connectivity
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