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It is reported that Xiaomi will hold a press conference on December 28 to release the Xiaomi 12 series of smartphones. According to the latest news, @数码闲聊站 revealed that the company may launch Xiaomi...[Details]

　　The so-called charge amplifier refers to an amplifier circuit used to amplify the charge signal from the piezoelectric device. The internal impedance of the signal source of this type of amplifier ...[Details]

　  The three-phase half-controlled rectifier bridge circuit structure is a common rectifier circuit, which is easy to control and has low cost. This article introduces a three-phase half-controlled r...[Details]

The compressor is a part of the car air conditioner. It compresses the refrigerant into high-temperature and high-pressure gas, which then flows through the condenser, throttle valve and evaporat...[Details]

According to foreign media reports, someone successfully used 99 smartphones to create a virtual traffic jam to trick Google Maps. The user named Simon Wechkert loaded 99 smartphones onto a cart and ...[Details]

As the epidemic recurs, the world is facing a "chip shortage", and the development of the semiconductor industry has attracted attention. At the fourth China International Import Expo being held in S...[Details]

1 SD card standard The SD card standard is a standard designed, patented and authorized by the SD Card Association for removable storage devices. It is mainly used to formulate the...[Details]

眾所周知，单个led功率低。为了获得大功率，需要多个并联使用，例如汽车尾灯，并且单个大功率LED价格很贵。LED另外一个致命缺点，显色指数低！在LED照射下显示的顏色没有白炽灯真实，这要从光谱分佈上来分析，属于技术问题。 Another disadvantage is the "light spot". Due to the defects in the manuf...[Details]

Simply put: if you want to use printf in mdk, you need to redefine the fputc function and avoid using semihosting (semihosting mode). The default output device of the standard library function is the...[Details]

Zhenqu Technology (Shanghai) Co., Ltd. (hereinafter referred to as "Zhenqu Technology"), a high-tech company in the field of electric drive for new energy vehicles in China, and ROHM Co., Ltd. (herei...[Details]

1. Install the ARM-Linux-GCC toolchain 　　Just one command: 　　sudo apt-get install gcc-arm-linux-gnueabi 　　The premise is that your Ubuntu system version is the latest version supported by the offic...[Details]

On the 20th, Ding Yun, executive director of Huawei and president of the Carrier BG, announced at a Huawei product and solution launch conference held in the UK that Huawei will release the lightest ...[Details]

APC explains the factors that cause UPS failure and simple solutions In the daily process of handling Smart-UPS repair applications, we found that many UPS failures are caused by factors such...[Details]

Recently, GM has started recalling all Bolt EVs, which includes not only the previous 2017-2018 and 2019 Bolts, but also the 2020-2022 models. This issue is now a huge pit, but it is not completely s...[Details]

On November 10, researchers at the Vienna University of Technology (TU Wien) developed a self-learning robot that can imitate humans to complete simple tasks, such as cleaning a washbasin. ...[Details]