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5G licenses have been issued. As the first batch of 5G mobile phones went on sale, a voice advocating the uselessness of 5G has appeared on the Internet. 在昨天OPPO副总裁沈义人发文谈自己对“5G无用论”的看法，沈义人称：“在5G资费进入大众...[Details]
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As an analytical instrument, the basic performance requirements of a spectrum analyzer include: 1. Frequency indicators: Measurement frequency range: reflects the spectrum analyzer’s ability to measu...[Details]
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Sony announced yesterday that it will integrate PlayStation Plus and PlayStation Now into a new PlayStation Plus subscription service in June this year. The new subscription service will be divi...[Details]
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Kernel version: linux-3.0 u-boot version: u-boot-2010.09 Development board model: FL2440 1. Modify the root file system No modification 2. Add kernel support for jiffs2 $ vt1...[Details]
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Before doing the experiment, you must first understand what DMA is and where its role lies. DMA, or direct memory access, is used in the transmission of some data, thereby freeing up the CPU and gi...[Details]
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When generating an exe program, how should the configuration files containing *** parameters, the database files of user information, and the report templates be handled? I require that the user can s...[Details]
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The cooling method of the motor is usually selected according to its power, operating environment and design requirements. The following are the five most common motor cooling methods:
1. Nat...[Details]
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车辆跟踪系统 非常适合监视一辆汽车或整个车队。跟踪系统由自动跟踪硬件和用于收集数据(如果需要的话，还有数据传输)的软件组成。2015年，全球车队管理市场的规模为80亿美元，预计到2022年将超过220亿美元，从2016年到2023年，年复合增长率将超过20%(数据来源：Global Market Insights)。拉美、中东和非洲对商用车辆的需求在上升，这对 车辆跟踪系统 而言也是一种潜在的...[Details]
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The difference between RS232 interface and RS485 interface
1. Physical structure of the interface
1. RS232 interface:
One of the computer communication interfaces. Usually, the RS-23...[Details]
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1.Buzzer 1. Buzzer Basics Buzzers are divided into active buzzers and passive buzzers according to the driving method. Active buzzers have an oscillator inside, and they will ring when a low level is...[Details]
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According to Jiwei.com, Unisoc has just completed a new round of financing of 5.35 billion yuan before its listing, which was jointly invested by four original shareholders including Shanghai Guoshen...[Details]
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On the evening of October 25, the market received breaking news. BYD announced that the Hong Kong Stock Exchange agreed to spin off BYD Semiconductor and list it on the Shenzhen Stock Exchange's G...[Details]
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Research firm Canalys today released a report on the smartphone market in mainland China for 2021 and the fourth quarter. The report said that in 2021, the smartphone market in mainland China e...[Details]
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1 Introduction
Language is the most direct tool for information exchange. In the industrial field, in traditional human-computer interaction, people often receive information from machines t...[Details]
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On October 23, Bloomberg reported today that Arm plans to cancel the license that allows its long-term partner Qualcomm to use Arm intellectual property to design chips.
Documents obtained by ...[Details]
Power technology
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