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After the mmc upgrade, if the user uses the old image (code before May 2018), the mmc error and the system will fail to start. This is because there are several lines of code for determining the mmc ...[Details]
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In 2017, Xiaomi released a Surge S1 chip, but three years later, the Surge S2 has not arrived. Fortunately, Xiaomi has not given up on developing its own chips. Today, Xiaomi officially announc...[Details]
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Ⅰ. Write in front This article follows the previous article "Configuration (Ⅰ)" to describe the three items after Configuration: Shortcut Keys, Text Completion, and Other. Shortcut Keys: All shortc...[Details]
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According to Jiwei.com, this year's two high-end models in Apple's iPhone 13 series will use LTPO TFT OLED panels and rigid-flex PCBs (RFPCBs), which will be supplied by Samsung Display and Samsung E...[Details]
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When it comes to LED drive accuracy, constant current error usually comes to mind. In fact, drive accuracy is not limited to current accuracy. LED is a typical current-driven device. Accurately c...[Details]
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LED lamp bead parameter introduction: 1. Brightness LEDs have different brightness and different prices. Lamp cup: general brightness is 60-70lm; Bulb: general brightness is 80-90lm. ...[Details]
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According to China Times, the Taiwan Epidemic Command Center announced on the 22nd that a new case of COVID-19 was confirmed to be a female employee of Quanta Computer. After the news was exposed, Qu...[Details]
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The United States is preparing to take further restrictive measures against Chinese surveillance camera company Hikvision, a decision that will affect cities from New York to London to Singapore. Acc...[Details]
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Excerpted from - ST Blog The 2020 Original NFC Development Board Design Competition, sponsored by ST, provides a platform for talented and creative engineers to display their works. 128 contestants...[Details]
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According to the mynavi website, NEC announced on December 20 that it will set up a "Quantum Computer Promotion Room" in 2020 to work with customers to promote the use of quantum computers, applicati...[Details]
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1. Project design background and overview
1. Development Purpose
As we all know, my country has a large population, scarce medical resources, and hospitals are often overcrowded. Infusion...[Details]
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First, let’s take a look at the basic functions and principles of this module. HC-SR04 ultrasonic distance measurement module can provide non-contact distance sensing function of 2cm-400cm, and the d...[Details]
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introduction
With the rapid development and continuous improvement of power electronics technology and PWM technology, switching power supplies have been widely used for their superior cos...[Details]
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1 Introduction High-frequency link inverter can realize electrical isolation, perform single-stage buck and boost conversion of voltage-type inverter, and has the outstanding characteristics of ligh...[Details]
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introduction
As a light source, dimming is very important. Not only to create a more comfortable environment at home, but also to reduce unnecessary electric light to further achieve energy ...[Details]
Microcontroller MCU
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