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The AC adapter circuit of a commercially available portable CD/VCD player is shown in the attached figure. The nominal output of the adapter is 5V, 500mA, the volume is 7×4×1.8cm, and the weight ...[Details]
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At present, ultra-bright
LEDs
have replaced incandescent lamps for traffic
lights
, warning lights, and sign lights all over the world. Compared with incandescent lamps, LED traffic...[Details]
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61. How to capture and reproduce the fleeting instantaneous signal?
A: Set the oscilloscope to single acquisition mode (set the trigger mode to Normal, set the trigger condition to edge trigger, adju...[Details]
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1 #include reg52.h
2 #define uint unsigned int
3 #define uchar unsigned char
4 flying keynum=0;
5 fly duan ={0xc0,~0x06,~0x5b,~0x4f,~0x66,~0x6d,~0x7d,~0x07,~0...[Details]
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As we all know, Gionee once conquered a large number of consumers with its extremely strong cost-effectiveness. Even in the era when China Cool Alliance was rampant, Gionee was able to get a sh...[Details]
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ZTE A20, the world's first mobile phone equipped with an under-screen camera, has been released. It has three versions: 6+128GB, 8+128GB, and 8+256GB, priced at 2,198 yuan, 2,498 yuan, and 2,798 yuan...[Details]
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According to news on March 1, Nissan’s self-driving cars are about to be launched to solve Japan’s traffic problems and will begin road testing this year. And Nissan plans to commercialize autonomous...[Details]
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Toyota released the new hydrogen fuel cell car "Mirai" in Tokyo at 10:00 am Japan Standard Time. As Toyota's first mass-produced hydrogen fuel cell model, it has attracted much attention since th...[Details]
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Previous study notes - I was learning the application of 74HC164 and debugging with Elan microcontroller. After successfully debugging with assembly, I debugged with C. As a practice, I planned to use...[Details]
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Rochester Electronics and Semtech work together to provide customers with a wide range of mixed-signal solutions . These products not only include discontinued components, but also some are stil...[Details]
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The pesticide residue tester is designed according to the national standard method and the requirements of the World Health Organization WHO, the Food and Agriculture Organization FAO pesticide resi...[Details]
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As of the close of May 13, the Shanghai Composite Index was 2898.05 points, up 0.22%, with a turnover of 223.9 billion yuan (the turnover on the previous trading day was 238.5 billion yuan); the Shen...[Details]
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According to foreign media reports, although the latest iPhone has just been released, rumors about its new models next year have begun to spread. According to leaked information learned by Dan Ives...[Details]
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The Spanish magazine "Old Mole" recently reported that the chip shortage problem has been around for several years. Behind this is a real contest between superpowers. In the long run, China is likely...[Details]
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Almost everyone who uses a cell phone has experienced a few dropped calls. While system failures or glitches in these and other consumer products are inconvenient, they are not catastrophic. Howeve...[Details]
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