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According to IDC, the global smart home device market is expected to grow 31% year-on-year to 643.9 million units in 2018. By 2022, the entire smart home market - including smart speakers, video ente...[Details]

Introduction: Use the T0 and T1 timing counter functions of the AT89S51 microcontroller to count the frequency of the input signal, and the counting frequency result is displayed through an 8-bit dyn...[Details]

According to 36Kr, Langsi Sensing Technology (Shenzhen) Co., Ltd. (hereinafter referred to as "Langsi Technology") has completed an angel round of financing of several million yuan, and investors inc...[Details]

Recently, the first Redmi wristband was officially launched, with an official price of 99 yuan and a crowdfunding price of 95 yuan on Xiaomi Mall. Xiaomi has been very successful in the field of smar...[Details]

Introduction: Recently, people have been talking to me about the problem of static mapping. Today, I will take the linux-2.6.35 kernel source code as an example to explain the process of IO static ma...[Details]

　　In high-frequency PCB boards, one of the most important types of interference is power supply noise . The author systematically analyzes the characteristics and causes of power supply noise on...[Details]

I only have the mini2440 board on hand, and the porting is also for it, which feels a bit old, ^.^!, I originally wanted to choose the latest uboot version, such as 2011.03, but the initialization ...[Details]

Function to write external flash EN25Q16A-104HIP uint8 program_data(uint16 flash_addr, uint8 buffer , uint8 len) {     uint8 i,flagstatus;     uint16 address;     int8 trycnt=1;     //u16 timeout =...[Details]

Lack of fusion (LOF) is a common defect in welds and is very harmful. It is usually not allowed in domestic and foreign steel structure standards. GB4730 is vague, and some foreign standards mention t...[Details]

Background: Soil is the environment for crops to survive, so soil nutrients are directly related to the nutritional elements of crops. By monitoring the abundance and deficiency of soil nutrients, th...[Details]

Today, the trend of TV enlargement is becoming more and more obvious. Data shows that in the first quarter of 2021, the shipment of ultra-large panels above 80 inches increased by 148% year-on-year. ...[Details]

After a while of laziness, I'm back. I've brought you a new calculation rule based on binary. It's called XOR and NOT (don't search on Baidu, I named it myself), and it has 5 instructions. ...[Details]

IAA MOBILITY 2025 exhibitor registration is now open. Before October 31, 2024, all exhibitors can enjoy a 5% early bird discount! With the launch of the new theme "Everyt...[Details]

01 Information security requirements This chapter mainly introduces the information security requirements from four aspects: hardware security, system security, communication security, an...[Details]

Disposable batteries cannot be recharged, and batteries that are fully discharged are considered scrap batteries. Secondary batteries can be recharged multiple times, but different chemical propert...[Details]