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The row direction of the circuit is scanned by ports P0 and P2. Since port P0 has no pull-up resistor, a 4.7k*8 resistor is connected to pull it up. If there is no resistor, 8 ordinary 4.7k 1/8w re...[Details]
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The 4G license has finally been approved.
On December 4, the Ministry of Industry and Information Technology officially issued 4G licenses to the three major operators. China Mobile, China Unicom...[Details]
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There are three methods that are commonly used for infrared reception. 1. Inquiry method, that is, the software keeps inquiring whether it is low (remote control signal) and then reads the header co...[Details]
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In modern society, when an elderly person is alone at home and encounters an emergency, he or she cannot make a phone call or call for help. This article designs a wireless emergency call system, so t...[Details]
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Snow scenes have a kind of magic to many friends who like taking photos. Sharing the beauty of the snow has become an annual event, especially in the capital city where historical buildings are ...[Details]
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Huawei promoted it first, and Tesla’s “face-slapping” test came later. Even though the LiDAR industry will not take off at this stage, those who use LiDAR for autonomous driving are definitely not fo...[Details]
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OFweek Cup · OFweek 2023 China
Robot
Industry Annual Selection (abbreviated as OFweek Robot Awards 2023) is jointly organized by OFweek, China's high-tech industry portal, and its authorita...[Details]
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Every year at the beginning of the new year, there is always exciting news coming from the CES exhibition in Las Vegas in the United States. Since automobiles entered the new energy era, this techn...[Details]
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The combustible gas measuring instrument is a kind of detection equipment widely used in many flammable and explosive places such as petrochemical, natural gas, mines, metallurgy, oil depots, etc. T...[Details]
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MCU clock system One is the internal clock oscillation mode, which requires a quartz crystal and an oscillation capacitor to be connected between the XTAL1 and XTAL2 pins; the other is the extern...[Details]
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1 Introduction
Mass spectrometers and other instrument systems often require voltages above kilovolts. Radio frequency signals with frequencies from several hundred kilohertz to several meg...[Details]
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On the morning of September 30, Apple pushed the iOS 14.2 beta version to developers today. A small piece of code in it seemed to confirm the news that EarPods headphones will no longer be incl...[Details]
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Nowadays, lidar has been widely used in many fields such as robotics, unmanned driving, AR/VR, 3D printing, etc. Depending on the application field, there are certain differences in the types of lida...[Details]
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The principle circuit for measuring DC voltage is shown in Figure 1-3. It consists of a meter head and multiple voltage-multiplying resistors. The positive and negative poles of the voltage to be mea...[Details]
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Avago Technologies has introduced a new product in the smallest RF amplifier series on the market. The new VMMK-3xxx amplifier uses Avago WaferCap chip-scale packaging (CSP) technology to provide an ...[Details]