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[i=s]This post was last edited by DDZZ669 on 2021-9-23 23:09[/i]The previous two Linux driver articles introduced two new and old development methods of character device drivers, and used a virtual ch...
Connect the LED light. Because the power supply can only provide 5V, the three LEDs need 12V to light up. I removed one LED so that 5V can also light up. After connecting, fix it with insulating glue ...
In order to facilitate testing, a PCB expansion board was designed and proofed. The board is designed with female headers corresponding to the pin headers of the STM32F401 development board, so that t...
In a world where everything is connected, more and more electronic devices that can understand speech are coming into our sight. In devices such as smartphones, tablets and laptops with Siri or Cortan...
29. What is the requirement for phase noise at 1k offset , 10kHz offset, and 100kHzoffset for GSM handset?Answer: For GSM handset RX it has several architectures to implement:Superheterodyne,near zero...
The full name of the equalizer is room equalizer. It is widely used in audio systems, but in most cases, it does not play its due role. It is an electronic device that can adjust the amplification ...[Details]
According to Reuters, after the United States added Huawei to the blacklist, Huawei's US subsidiary Futurewei has begun to separate its business from the parent company. Although most of the technolo...[Details]
According to Dutch technology blog letsgodigital, TCL applied for a smartphone appearance patent to the State Intellectual Property Office in December 2019 and announced it to the public on June 12. ...[Details]
1 Overview
The brushless DC motor is the most commonly used brushless motor. It is easy to drive, has adjustable speed and long service life, and is suitable for a variety of large and sma...[Details]
In the mobile Internet ecosystem, the super portal status of search engines in the PC era has gradually been diverted to many apps, and Baidu has turned to the "search + information flow" dual-engine...[Details]
According to news on January 18, TSMC and the Industrial Technology Research Institute (ITRI) have made breakthrough progress in next-generation MRAM memory-related technologies and successfully dev...[Details]
Industrial Ethernet refers to the Ethernet technology used in the industrial field, which is characterized by high reliability, real-time and security. In order to meet these requirements, Indu...[Details]
iPhone users are having trouble accessing WhatsApp today, 9to5 Mac reports. For some unknown reason, the iOS app crashes soon after users try to open it, and the issue has been affecting many u...[Details]
On January 5, the 2022 CES (Consumer Electronics Show) officially opened in Las Vegas, USA. Affected by the epidemic, safety is the main focus, so this year's CES adopts a combination of online and o...[Details]
At present, the fields of audio, video, imaging, communication, network, etc. have gradually realized digitalization. This trend has also spread to the field of power supply system dominated by analo...[Details]
Today I will share with you the modules used in the industry. It has been widely used in various industries. Although we may not necessarily develop robots, as a robot, there is still a great oppor...[Details]
Abstract: A high-precision self-excited multi-channel output regulated switching power supply is proposed. Compared with the previous multi-channel output switching power supply, it uses very few comp...[Details]
Periscope camera systems in future iPhones could include actuators that allow the lens to move for applications like autofocus and optical image stabilization without the need for a large came...[Details]
Recently everyone is talking about low illumination, from 0.01LUX to 0.0001LUX. What kind of low illumination camera should we choose?
行业内人士强调，照度能低到多少，不仅要看镜头的光圈大小（F 值），更要看是在什麽条件限制下才能出现所标示的LUX 值，否则...[Details]
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