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Recently, a Peking University research team published an important result in Nature, which will greatly promote the development of photonic integration and photonic chips. In fact, not only in academ...[Details]
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Although the V-cone flowmeter is a relatively advanced measuring tool for measuring gas in differential pressure flowmeters. However, due to various reasons on site, the on-site measurement accuracy h...[Details]
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Recently, a new watch similar to Apple Watch was exposed. Today, the vice president of Huami Technology announced on Weibo that this watch is the new watch that Huami Technology is about to lau...[Details]
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On April 28, Changdian Technology announced the official establishment of the "Design Service Business Center" and the "Automotive Electronics Business Center", and held a grand unveiling ceremony in...[Details]
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On October 20, 2021, the 2021 Shenzhen International Mini/Micro-LED Industry Chain Development Summit Forum with the theme of "Collaborative Innovation, Co-creation of Vision" was held at the Shenzhe...[Details]
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From March 31st to April 2nd, the 9th China Electric Vehicle Conference was hosted by the China Electric Vehicles Association of 100 and co-organized by Tsinghua University, China Society of Automoti...[Details]
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Digital dynamic scanning can save I/O ports and save power. The general dynamic scanning of digital tubes can be realized by delay function or timer. If delay is used, the program is more complicated ...[Details]
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This paper proposes a network broadcast design scheme for embedded systems based on ARM and PoE. The scheme uses the ARM926EJ-S processor and its peripheral modules as the hardware platform and embedd...[Details]
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OnePlus is set to launch its new, more affordable OnePlus Nord smartphone next month, so we’re only a few days away from the launch. This smartphone has already been one of the most leaked sma...[Details]
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My MCU Methodology Part 2 STM32 MCU Special Edition Written by zzw YanJun.tech Because I was really busy during this period, and of course because of my procrastination, I have not started writing th...[Details]
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K214/J77 Single-ended Headphone Amplifier
The single-ended amplifier circuit is a model of exchanging efficiency for sound quality. The circuit introduced below is a single-ended headpho...[Details]
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Abstract Frequency Modulated Continuous Wave (FMCW) radar has been widely used in automobile anti-collision systems. This paper describes and compares the development of automobile anti-collision s...[Details]
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In some special applications, microcontroller communication cannot use wired data transmission, but requires short-distance wireless data transmission. Short-distance wireless transmission has the ad...[Details]
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With the rapid development of mobile business, especially the development of CDMA and third-generation mobile communication technology, the system has higher and higher requirements for the lineari...[Details]
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Food safety tester instrument testing standards
(1) Nitrite: GB/T 5009.33-2008 "Determination of nitrite and nitrate in food"
(2) Sulfur dioxide: GB/T 5009.34-2003 "Determination of sulfite...[Details]