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Power supply
is an important part of PCB board. Each
chip
needs power supply. Chips are actually very fragile. If the positive and negative are connected in reverse, most of th...[Details]
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1 SWI interrupt processing steps: 1) When entering an interrupt, pc- lr, cpsr- spsr, and cpsr_mode are set to privileged mode, all of which are completed by hardware. 2) Registering the interrupt vec...[Details]
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Connection and programming of LED digital display
In the single-chip microcomputer system, LED digital display is usually used to display various numbers or symbols. It is widely used because of its ...[Details]
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1. What is temperature?
Heat is a type of molecular motion. The hotter an object is, the faster its molecules move. Absolute zero is defined as the temperature at which all molecular motion ...[Details]
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Abstract: Fatigue driving has become one of the main causes of traffic accidents. This paper proposes a method for detecting eye fatigue based on 3G video. The video stream is captured using Direc...[Details]
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Swiss embedded storage provider Swissbit Holding AG is to be acquired by private investment company Ardian. Ardian will acquire a majority stake, while Swissbit's existing management team will retain...[Details]
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As a partner of Dassault Systèmes, Synopsys continues to enhance its LucidShape CAA V5-based products to facilitate the development of safer and smarter vehicles in the CATIA V5 environment. CATIA ...[Details]
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The top 50 security companies are offering more and more cost-effective solutions. These companies are no longer focusing solely on the high-end segment. SMB (sales for business) solutions are more...[Details]
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1 High-voltage motor
Variable frequency speed regulation
Energy-saving significance
The total power consumption of various motors in China accounts for more than 60% of the total power c...[Details]
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Assume that there are three ports PB6, 7, and 4: If pressed, it is low level (0); otherwise, it is high level (1). void ReadKey(void) { //1. Get the GPIB- IDR register value (get the key valu...[Details]
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A single silicon diode has limited voltage resistance, so many of them are connected in series in a device, which serves as a high-voltage rectifier element. This is called a high-voltage silicon sta...[Details]
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On November 20-21, the "2019 China Safety Industry Conference and the 3rd Traffic Safety Industry Summit" hosted by Cheyun.com and co-organized by Electric State was held in Foshan City, Guangdong Pr...[Details]
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On March 10, the remote-controlled load switch was successfully closed following the operator's instructions, and the Three Gorges New Energy Qinghai Xitieshan Liushaping Phase II 100MW wind power ...[Details]
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LED has unique advantages, but LED is a fragile semiconductor product, so we must be extra careful when using LED products. Now the author summarizes some precautions for using LED. Please pay gr...[Details]
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From the Internet era to the intelligent era, high-tech products emerge in an endless stream. Many things that existed in fantasy when we were young have now become reality. Today I will talk to you ...[Details]
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