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Key points: Master the various propagation paths of electromagnetic waves.
When planning and building a mobile communication network, from determining the frequency band, allocating the freque...[Details]
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Due to the recent cold wave and snowstorm in the United States, Samsung Electronics' wafer factory in Austin, Texas, was short of electricity and had to be temporarily closed. It is reported that S...[Details]
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Yesterday, a piece of news dominated my screen. State Grid and China Radio and Television Corporation are cooperating on 5G, investing 60 billion yuan to build 114,000 base stations. State Grid pla...[Details]
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The 4-20mA digitally controlled current source circuit designed by DAC7644 (Burr-Brown 16-bit quad voltage output D/A converter) is shown in Figure 1. DAC7644 provides a differential reference inpu...[Details]
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The electronic clock program made by 51 single-chip microcomputer has been introduced in many places. For single-chip microcomputer learners, this program is basically a threshold. If you master the ...[Details]
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1. Introduction According to the law of historical development, the current transition period is when high-frequency UPS replaces industrial-frequency UPS. During this period, the output transformer...[Details]
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X-FAB, a leading analog foundry company, and Pineje, a domestic SiC power device supplier, have reached a long-term strategic cooperation to jointly promote the development of the global SiC indu...[Details]
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When the switch SP1 is pressed, the AT89S51 microcontroller generates a "ding dong" sound which is output from the P1.0 port to the LM386 and then sent to the speaker after amplification. Circuit Sch...[Details]
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4. CPU running at DCO clock:
The slowest frequency we can run DCO is about 1MHz (which is also the default speed). Therefore, we will start by switching MCLK to DCO. In most systems, you will wan...[Details]
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Recently, automotive parts supplier Schaeffler announced that the OmniSteer research project has been successful, and lateral parking of cars will become a reality in the future. This is an innovativ...[Details]
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When you buy a car with a long body, and you try to make a U-turn on a road with dense traffic, but you cannot complete the U-turn in one go, and the newly vacated space is immediately filled with ca...[Details]
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虚拟仪器是全新概念的仪器，它是对传统仪器概念的重大突破，它的出现开始了仪器发展的全新时代，是仪器领域的一场革命。设计功能强大、高效、集成完美，应用于测试和测控领域的虚拟仪器系统是信息时代的需求。 1 虚拟仪器系统的构成 虚拟仪器由硬件设备与接口、设备驱动软件和虚拟仪器面板组成。其中，硬件设备与接口可以是各种以PC为基础的内置功能插卡、通用接口总线接口卡、串行口、VXI总线仪器接口等设备，或者...[Details]
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Huawei launched the Honor 8S 2020 in the UK on June 5, which supports Google Play services and is priced at 99.99 pounds, or about 896 yuan. IT Home learned that compared with Honor 8S (...[Details]
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The latest news shows that Apple will bring different chips to the new iPhone 14 iteration. Only the iPhone 14 Pro series models can be equipped with the new generation A16 chip, while the slightly l...[Details]
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Recently, the 2.1MW/4.2MWh energy storage power station built by Hitech Smart Energy in Guangzhou City, Guangdong Province was successfully connected to the grid and put into operation. This en...[Details]
Embedded System
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