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Let's review what u-boot does in the first stage of startup: First: Set the CPU to SVC mode Second: Turn off the watchdog Third: Turn off interrupts and sub-interrupts Step 4: Set the clock ...[Details]
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1 Introduction
Multilevel quadrature amplitude modulation (MQAM) is a high-order modulation method that combines amplitude and phase, with high bandwidth utilization and good power utilization...[Details]
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The latest industry forecast is that LCD panel prices will continue to decline by the end of the first quarter or the beginning of the second quarter of 2022. According to WitsView data, the unit pri...[Details]
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Obviously, under the dual pressure of policy and cost competition, new energy technology needs to continue to evolve towards low cost, modularization and standardization. The reduction of "technical ...[Details]
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Tunç Doluca has more than 30 years of executive leadership and technical experience in the semiconductor industry. He has served as President and CEO of Maxim Integrated (Maxim) since 2007. In this r...[Details]
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By Xia Xu and Zhu Xuetian, China Telecom Research Institute, ZTE Technologies
Different from traditional communication networks such as the fourth generation mobile communication (4G) technolo...[Details]
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With the miniaturization of electronic devices, the power supply of compact electronic devices is a very important issue. At present, DC-DC converters are widely used in battery-powered devices and co...[Details]
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Huawei spent 1 billion pounds to build a research and development base near Cambridge, England, in 2018. It spent 37 million pounds just to buy the land, hoping to use it as its international headqua...[Details]
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As the name suggests, autonomous driving means letting machines drive instead of humans, while we humans just sit back and do nothing, eating hot pot, singing songs, and playing mahjong. Of course,...[Details]
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Wireless networks and surveillance networks are indispensable for restaurants, coffee shops and other public consumption places. On the one hand, the free wireless Wi-Fi of the restaurant can provide...[Details]
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1. The LED turns yellow.
Reasons:
1. The baking temperature is too high or the baking time is too long;
2. The glue ratio is incorrect, too much A glue will easily turn yellow.
...[Details]
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UC3842 voltage feedback circuit diagram
The output voltage is directly divided as the input of the error amplifier (as shown in Figure 2)
After the output voltage VO is divided by resistors R2...[Details]
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On October 20, 2021, Beijing time, the new product of the iQOO Z5 series family---iQOO Z5x officially started pre-sale before the arrival of the "Double Eleven" promotion. The new iQOO Z5x is availab...[Details]
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The HMO2024 oscilloscope has 200MHz, 350MHz, 500MHz and 1GHz bandwidth, and can provide up to 5Gs/s sampling rate and 20M sample point storage depth. Therefore, even for long signal sequences, it can...[Details]
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Auto-coupling step-down starting and star-delta starting are two commonly used motor starting methods. They have different effects on the current and torque of the motor during the starting process...[Details]
Microcontroller MCU
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