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On October 10, China Electric Power Certification and Inspection (Beijing) Co., Ltd. (hereinafter referred to as "China Electric Power Certification") officially issued grid-connected certification...[Details]
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1. Classification of timers on STM32 We have learned about the STM32 system timer SysTick. Its main function is to provide system ticks for the OS. Of course, we can also use it to achieve precise ...[Details]
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According to Taiwanese media reports, due to rumors that SMIC may face US sanctions, the mainland's wafer foundries were required by the government to give priority to supplying production capacity t...[Details]
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1. Independent watchdog The STM32's independent watchdog is driven by a dedicated internal 40Khz low-speed clock, which remains effective even if the main clock fails. The principle of the watchdog: ...[Details]
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Now that we know how to choose an oscilloscope, let's learn about the functions of the oscilloscope's controls. There are many buttons and knobs on the oscilloscope panel. When I first saw the oscill...[Details]
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On June 29, the domestic industrial software service provider "Symet" announced that it had recently completed the A++ and B rounds of financing totaling 540 million yuan. Investors include China Int...[Details]
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Foreign media Sammobile quoted the reliable whistleblower @Roland Quandt as saying that some production of Samsung Galaxy S21 Ultra has now begun. However, the whistleblower also said that he ...[Details]
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Ten years is neither long nor short. In the past ten years, the earliest post-90s have reached the age of 30, and the earliest post-00s have reached adulthood; in the past ten years, mobile phones ha...[Details]
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How Huawei invests: First give 200 million orders and then go public in one year In April 2020, the listing application of SiRuiPu, a chip company invested by Huawei, was accepted on the Science and ...[Details]
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According to Jiwei.com, Apple today released a minor update to the iOS 12.3.1 operating system, which corrects an issue in Messages where messages from unknown senders may still be displayed in the c...[Details]
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Implementation process 74HC138 decoder (38 decoder) - 74HC02 NOR gate - 74HC573 latch 38 decoder Three inputs control eight mutually exclusive low-effective outputs (three P2 ports control eight ...[Details]
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Currently, most parts used by automobile manufacturers are required to have AEC-Q certification. AEC-Q certification is an internationally accepted product verification standard for automotive comp...[Details]
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1. OLED display The STC15W408AS microcontroller does not provide an IIC bus interface, but we can implement it by simulating IIC. You can search online for information about the IIC bus. Here we take...[Details]
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In digital circuit experiments, several instruments and meters are needed to observe experimental phenomena and results. Commonly used electronic measuring instruments include multimeters, logic pe...[Details]
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High-voltage motors are widely used in industrial production, power systems, petrochemicals and other fields. The reliability and safety of their operation are crucial t...[Details]