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I found that when I press a keyboard key, I can immediately send a release action, and I can't release the key. After measurement, there must be a certain delay in the middle, and some say that the c...[Details]
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The monolithic integrated FM transmitter circuit composed of MC2831A and peripheral components is shown in the figure. The operating voltage of MC2831A is 3~9V. The frequency of the crystal SJT is ...[Details]
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According to Juheng.com, Morgan Stanley recently stated that Apple's upcoming iPhone 12 series will usher in the largest wave of phone replacement in China in four years. 大摩表示，目前中国苹果用户持有推出两年iPhone占...[Details]
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According to the International Energy Agency (IEA), 19% of the world's electricity consumption is used for lighting. Therefore, in recent years, countries around the world have been committed to repla...[Details]
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1. Communication parameters:
Communication parameters include data bit, stop bit, baud rate and check mode.
Data bit, stop bit and baud rate are determined by the microcontroller. The set...[Details]
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SiRuiPu disclosed its semi-annual report on the evening of August 4, with operating income of 485 million yuan in the first half of 2021, a year-on-year increase of 60.56%; net profit of 155 million ...[Details]
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Abstract: A design scheme is proposed for temperature collection in daily life, and the system structure composition and software and hardware design scheme are introduced in detail. The system use...[Details]
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1. During the manufacturing and overhaul, during the handover and preventive tests, during the determination of the average temperature rise of the windings and during the fault diagnosis, the DC r...[Details]
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LED light source technology is becoming more mature, and the luminous lumens per watt are increasing rapidly, which has led to a gradual price reduction. Taking a 1W LED light source as an example...[Details]
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Weilai has one, Xiaopeng has two, and Weimar has three. At the Guangzhou Auto Show, Salon Auto's Mecha Dragon was equipped with four... No matter how hard Musk talks, it is foreseeable ...[Details]
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On December 28, the signing ceremony of the high-end integrated circuit industry cluster of Shandong Industrial Technology Research Institute (referred to as "Shandong Industrial Technology Research ...[Details]
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Recently, Dongguan City has added (or transferred) 41 major municipal projects with a total investment of more than 80 billion yuan. Among them, Huawei's Tuanbowan Plot 7 industrial project was add...[Details]
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1. Installation of keil5 When I was looking for it before, I always thought that the official website was not very convenient to download, and I looked for it elsewhere, which was a very difficult pr...[Details]
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Nikkei News quoted people familiar with the matter as reporting that after months of suffering from parts shortages, China's mainland dual energy consumption controls and other factors, as well as su...[Details]
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In the assembly language of the ARM processor, the constant expression of shifter_operand in the instruction syntax format has the following provisions: "The constant must correspond to an 8-bit bi...[Details]
PCB Design
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