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　   On December 16, it was reported that a new vivo phone with model number V2049A obtained 3C certification and supports 120W fast charging. 　　Blogger @数码闲聊站 pointed out that this new phone may be t...[Details]

Battery powered transistor headphone amp ...[Details]

　　Since 2010, developed countries such as Europe, the United States, and Japan have begun to implement laws to ban incandescent bulbs. The reason for the laws is to restrict light sources with low lu...[Details]

Off-topic: Why learn bare metal programming? Learning bare-metal programming paves the way for learning u-boot porting and kernel drivers in the future. If you only do application programming, then t...[Details]

A three-coordinate measuring instrument is an instrument 　　that can measure geometric shapes, lengths, and circular divisions within a hexahedral space. It is also called a three-coordinate measuring...[Details]

At a technical communication meeting held by Samsung in Beijing, Zhang Daijun, director of Samsung China Research Institute, shared Samsung's technological accumulation and product commercialization ...[Details]

ARM==Advanced RISC Machines     It has created a brand-new business model, realized a fabless factory, and made profits by selling licenses for chip technology intellectual property rights.     Sec...[Details]

There are three main methods for saving Siemens S7-200plc program data during power failure. The data power failure saving methods and characteristics are as follows: 1. Set the power-of...[Details]

1 Introduction AT89S52 is a low-power, high-performance CMOS 8-bit microcontroller with 8K in-system programmable Flash memory. The AT89S52 is manufactured using Atmel's high-density non-volatile mem...[Details]

Many electronic components look similar but have different functions, uses and powers. If you don't distinguish them carefully when purchasing, it is easy to buy the wrong electronic components. Wh...[Details]

High-volume alarm generator The circuit of this alarm sound generator is simple, the working performance is stable and reliable, the working voltage is 6V-12V, and it is suitable for use as a ...[Details]

　　1. Normally, the DC power input reverse connection protection circuit uses the unidirectional conductivity of the diode to achieve reverse connection protection. See Figure 1 below: 　　This conn...[Details]

Abstract: In the past decade, the computing power of smart cards has developed rapidly, and public key-based smart cards have been widely used in various fields. In 2001, Borst summarized the vari...[Details]

1. Introduction At present, most large-scale LED display systems at home and abroad are basically composed of an LED control board and several LED unit boards co...[Details]

PL2586 is a new USB HUB chip from Wangjiu The PL2586 is an innovation that integrates features that comply with the USB-IF "Battery Charging Specification Revision 1.2" to support fast chargin...[Details]