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1. Experimental task : Display a column on the 8X8 LED dot matrix, and let it move smoothly from left to right three times, then from right to left three times, then from top to bottom three times, a...[Details]
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I don't understand why MCU is so popular. Embedded is different from MCU.
In the past, MCU was popular because there were many toy factories in the Pearl River Delta. Many toy factories used MCU to...[Details]
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NTC thermistor is a commonly used type of thermistor, and has certain applications in many fields. When we use NTC thermistors, we need to master the measurement methods of NTC thermistors. Today, th...[Details]
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The identification method of the matrix keyboard has been discussed in the 51 matrix keyboard identification. Now let's talk about the difference between the PIC microcontroller and the 51 microcontro...[Details]
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As we all know, there has been news about Apple's new iPhone 14. According to previous reports, the iPhone 14 Pro series will adopt a single hole + pill-shaped hole design. The latest Apple iPhone 14...[Details]
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LED
uses solid-state
semiconductor
chips as luminescent materials. The principle of luminescence is that when a forward voltage is applied to both ends, the carriers in the semicon...[Details]
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Tencent Red Magic gaming phone 6S Pro launched a limited edition battlefield camouflage set, equipped with a Snapdragon 888 Plus processor, 18GB+512GB ultra-large memory combination, priced at...[Details]
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In 2018, global chip sales were approximately $468.8 billion, of which China imported $312 billion, accounting for two-thirds. This means that two out of every three chips produced in the world are s...[Details]
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High-frequency infrared carbon-sulfur analyzers are used in many foundry and other enterprises to detect the content of carbon and sulfur in materials, thereby effectively improving product quality. ...[Details]
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In 1883, university professor Warren Seymour Johnson (1847-1911) obtained his first patent for an "electric remote-controlled thermometer," which could automatically adjust the temperature of a room....[Details]
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Watchdog timer, in the embedded field, some devices need to work in some extreme environments, that is, places where people rarely go or are difficult to go. In the long-term operation, it is inevi...[Details]
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Failure Mode and Effects Analysis (DFMEA) plays a very important role in the automotive industry. In the process of automotive design and manufacturing, DFMEA is widely used to identify and manage ...[Details]
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When using an ordinary multimeter to measure AC signals, the frequency response of the multimeter is often a problem . Using an oscilloscope connected to the Internet can obtain the data collected by...[Details]
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2. Use a switching constant current source with high voltage direct step-down
The voltage obtained by direct rectification of AC is 264V. At this time, a high-voltage Buck circuit with dir...[Details]
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The locomotive display terminal is the main device for human-machine information interaction between locomotive crew and locomotive equipment. In actual use, the display terminal reflects the locom...[Details]
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