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Last time, I finished reading the boot assembly and prepared the C operating environment. Now I will start to learn the C source code and jump from the start.S file to the file
lib_arm/board.c ...[Details]
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1. Use P1.0-P1.3 of AT89S51 microcontroller to connect four light-emitting diodes L1-L4 to indicate the current counting data; use P1.4-P1.7 as the input terminal of preset data and connect four dial...[Details]
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5G orders are “really” coming! The 5G business opportunity that was originally expected to arrive next year or the year after has unexpectedly arrived earlier due to the fierce trade war between Chin...[Details]
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At present, the trend of electronicization of automotive functions is becoming increasingly stronger to cope with increasingly stringent fuel efficiency regulations and meet consumers' higher r...[Details]
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At the end of the year and the beginning of the next year, PC Magazine, a well-known American IT magazine and the flagship publication of ZD Group, the world's largest IT media, held a 2019 consumer ...[Details]
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Since 1978, when R. Keller first used RDMiddlebrook's theory to perform
SPICE simulation of
switching
power supplies
, in the past 30 years, many scholars have established their own mo...[Details]
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Basics of using infrared thermometers
Understanding the working principle, technical indicators, environmental working conditions, operation and maintenance of infrared thermometers is the basis fo...[Details]
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In the HiSilicon project, we need to use the ZeroMQ message queue framework, which was used well on the PC before. So we need to cross-compile it and port it to the ARM platform. For transplantatio...[Details]
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At present, the traditional manual grinding method is inefficient, difficult to guarantee quality control, and the product quality is uneven. Based on the advantages of independent core technolog...[Details]
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e-Network launches seven-segment display design challenge The competition encourages community members to develop projects using seven-segment displays Shanghai, China, June 13, 2022 – Farnell e...[Details]
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On August 12, Honor held a new product launch conference to release its latest flagship product, the Honor Magic3 series, to the world. As a high-end flagship mobile phone that explores extreme techn...[Details]
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According to a report by The Paper on April 26, SMIC stated that the company began implementing closed-loop management on March 18, realizing simultaneous integrated closed-loop management of the Zha...[Details]
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DS1302 Real-Time Clock Module For the clock chip, we only need to know its write timing diagram and read timing diagram, as well as the internal structure of the clock chip. The corresponding ...[Details]
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1. STM32 GPIO firmware library function configuration method 1. Delete some unused firmware library files in the project as needed and keep the useful firmware library files 2. Comment out these ...[Details]
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The commonly used 555 integrated circuit is connected into a direct feedback type astable circuit and installed in the space inside the multimeter. It is very convenient to use it to determine whethe...[Details]
RF/Wirelessly
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