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1. Change the default root directory of vsftpd /var/ftp/ to the specified directory
Under the default configuration, the root directory of the anonymous user after logging into the vsftpd service is ...[Details]
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1.1 Overview of Ultrasonic Flow Measurement Development
Industrial production and scientific experiments are inseparable from the understanding of the quantity of working fluids or the control of...[Details]
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The measurement methods of coordinate measuring machines (CMMs) can usually be divided into contact measurement, non-contact measurement, and contact and non-contact measurement. Among them, the conta...[Details]
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An oscilloscope is one of the essential tools for electronic engineers. It can convert invisible electrical signals into visible images and display the changes of the measured signals on the screen, m...[Details]
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In recent years, many countries in the world have formulated policies to phase out incandescent bulbs in stages. For example, China plans to phase out all incandescent bulbs above 60W for general lig...[Details]
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After the microcontroller is powered on, if the crystal oscillator starts to vibrate normally, the CPU will start working under the drive of the crystal oscillator. The job of the CPU is to extract i...[Details]
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This article introduces a photoelectric complementary LED street light controller, which controls the solar panel to charge and discharge the battery pack, detects the battery capacity in real time, ...[Details]
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Abstract: Based on the UP-TECH S3C2410 DVK1.1 development platform, a touch-type embedded handheld entertainment system design is proposed. This system mainly includes the basic functions of multi...[Details]
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In the classic TV series "The Jetsons," the protagonist hires a robot butler named "Rosie" who also serves as a makeshift security system and companion for the family. Although "The Jetsons" takes...[Details]
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Leeb hardness tester is a measuring and testing instrument, which plays an important role in ensuring product quality and conducting failure analysis. Therefore, choosing a good Leeb hardness tester ...[Details]
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On June 11, Nanda Optoelectronics said on its investor interaction platform that the company's ArF photoresist products received the first small batch order, with very small sales in this period. Sta...[Details]
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1. Description of the Program
1. Want to realize a wearable smart camera that can be used by the wearer in the form of glasses accessories or glasses, based on the computing power of Allwinner...[Details]
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According to Business Insider, Uber and Lyft are currently losing a lot of money. In 2019 alone, the two companies lost a total of $3.8 billion. Most investors and analysts put the key to profitabili...[Details]
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As electronic systems become increasingly complex and feature-rich, the requirements for board-level power management and control are becoming more and more complex. Providing multiple low voltages...[Details]
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Mitsubishi PLC (Programmable Logic Controller) is a control device widely used in the field of industrial automation. It has the characteristics of flexible programming, powerful functions, high re...[Details]