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During trial production, adjust R (200 ohms) so that the collector current of T2 is 30-40 mA. The yellow, green and red lights use 6.3V specifications, and the red and green lights are changed to 2....[Details]
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Last Friday, a bug occurred in the App Store, causing newly updated apps to be unable to open, and a prompt would pop up saying "This app is no longer shared with you." This bug affected many ...[Details]
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This article introduces the LM3S9B96 MCU Cortex-M3 processor block diagram and the main features, block diagram, circuit diagram and expansion board circuit diagram of the Stellaris? LM3S9B96 developm...[Details]
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Yesterday a classmate asked me how to implement a function of a microcontroller:
1:
If you press KEY1, the 30S countdown will start.
If you press KEY2, the function will be executed and the 30S cou...[Details]
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introduction
In the traffic light control system at the traffic intersection, it is necessary to transmit the status information of the traffic flow, speed, etc. of each port to the main con...[Details]
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Handheld refractometers are easy to carry, have high measurement accuracy, are inexpensive, easy to operate and maintain, and are small and light. They are widely used in various industries and depa...[Details]
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ATmega8 has an on-chip BOD (Brown-out Detection) circuit that detects changes in VCC during operation by comparing it with a fixed trigger level. This trigger level is set by the fuse bit BODLEVEL, 2...[Details]
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1. Transplantation environment Host: VMWare--Fedora 9 Development board: Mini2440--64MB Nand, Kernel:2.6.30.4 Compiler: arm-linux-gcc-4.3.2.tgz u-boot: u-boot-2009.08.tar.bz2 2. Transplantation ...[Details]
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On December 10, the 1000 kV transmission line of Datang Xilinhot Power Plant, a supporting project of the Ximeng-Shandong 1000 kV UHV AC transmission and transformation project, was officially conn...[Details]
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The main functions and features of handheld cabling testers are to meet the actual needs of on-site work. There are great differences in price, performance and application. In the field of cabling t...[Details]
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1. Convert the data received by the serial port into float data float CXXDlg::FourChar2Float(char* szBuf, //HEX ASC data bool bBigEndian = false) //Indicates whether it...[Details]
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According to foreign media reports on January 4, since Huawei’s self-developed operating system HarmonyOS was put into use, its user base has continued to grow, and its share in the operating system ...[Details]
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When testing hardware circuits, we often encounter problems that are easy to ignore and difficult to detect. However, we must face up to the existence of these problems and find ways to reduce or e...[Details]
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Many products require auxiliary DC outputs to provide power to external devices or subsystems. If these subsystems are hot-connected, the auxiliary outputs must be protected from short circuits. Solu...[Details]
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Recently, researchers from the Information Photonics Laboratory of the Xi'an Institute of Optics and Precision Mechanics of the Chinese Academy of Sciences designed a lens for achieving efficient c...[Details]