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1. Introduction
1.1 Electronic Payment and Electronic Receipt
With the development of the Internet and mobile terminal technology, mobile payment technology will become more and more popular.
M...[Details]
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The drive of LED digital tubes is relatively simple and easy to understand. Multi-digit digital tubes are generally in the form of LED arrays. Each digit uses a common terminal, and the corre...[Details]
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What is an inductive step-up DC/DC converter? As shown in Figure 1, a simplified inductor-type DC-DC converter circuit, closing the switch causes the current through the inductor to increase. Ope...[Details]
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I don't know whether the U-BOOT transplantation is successful, or completely successful. Some other functions of the transplanted U-BOOT, such as printenv, loadb, bdi, fli and other commands and displ...[Details]
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According to Reuters, U.S. government data released on Monday showed that Apple sold fewer than 500,000 iPhones in China in February due to the outbreak of the new coronavirus. According to data fr...[Details]
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This issue introduces the application examples of the upgraded storage recorder MR8875-30.
MR8875-30 can record the voltage applied to the equipment, the voltage drop of superconducting materials,...[Details]
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Hua Hailiang, Vice President of Meizu Technology, revealed the new color of Meizu 16T - Whale Blue. When light shines from different angles, the back of the Meizu 16T Whale Blue can present...[Details]
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With the continuous development of 5G, AI, large model and other technologies and intelligent manufacturing technology, the automobile industry is undergoing digital and intelligent transformation, a...[Details]
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The small MCU STM8S003F3 has only 1K RAM and 8K Flash. Its application is relatively simple, including AD sampling, GPIO control, and PWM control. It is a good embedded application. A recent projec...[Details]
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Corning Optical Communications LLC, the fiber optic cabling and related technology subsidiary of Corning Incorporated (NYSE: GLW), and CommScope Technologies LLC, a subsidiary of CommScope Inc. (NASD...[Details]
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Why is the Bluetooth headset not working well? Lossy compression during Bluetooth transmission The fundamental reason for the poor sound quality of Bluetooth audio devices is very simple. It is be...[Details]
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Today, I followed Guoqian and got to know the whole process of bare metal development of ARM under Linux. Now the summary is as follows:
First of all, let's explain why we need to learn bare metal de...[Details]
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Xiaomi Community’s official account recently released an official response progress report, answering some questions that Mi fans were concerned about last week. IT Home learned that the p...[Details]
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一. IAR SWO IAR comes with the printf via SWO function in the compilation options. First, let's talk about how to output information to the SWO port. It's done in one sentence. ITM_SendChar(ch); Stri...[Details]
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New and improved Krait kernel architecture
The reason why Qualcomm's third-generation MSM8x60 processor is criticized for its high frequency and low performance is that, in addition to the use of a...[Details]