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It can be implemented in the application. Do not change the kernel driver. Write a small program: #include stdio.h #include fcntl.h #include sys/ioctl.h void keep_LCD_screen(void) { ...[Details]
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No-load protection circuit
Figure No-load protection circuit
The figure shows the no-load protection circuit. In order to prevent the voltage on the transformer winding from being too high,...[Details]
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Recently, the Broadband Development Alliance released the second quarter "China Broadband Speed Status Report". The report shows that the average download speed of my country's mobile broadband use...[Details]
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1. Comparison of high-frequency crystal oscillator measurements Let's first feel the difference in measurement results when the probe ground wire is long or short. Take the crystal oscillator ...[Details]
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Abstract: By analyzing the ISO/IEC 7816-3 transmission protocol, a contact smart card controller that complies with the protocol standard is designed to support smart cards with two different trans...[Details]
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O Introduction
On the basis of the existing toy electric car, a photoelectric detector is installed to realize real-time measurement of the speed, position and running status of the electr...[Details]
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1. Question: What is the difference between a microcontroller, a microcontroller, and a microprocessor?
Answer: Processors usually refer to three types of chips: microprocessors, microcontrollers, ...[Details]
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According to official news from SuperCore, Jiangsu SuperCore Semiconductor Co., Ltd. ("SuperCore") has successfully developed the first set of HTCVD silicon carbide (SiC) single crystal growth equipm...[Details]
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On the afternoon of July 19, Mr. Zhou Daojing, member of the Financial and Economic Committee of the National People's Congress and former Chairman of the China Securities Regulatory Commission, an...[Details]
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On January 20, the Fourth Session of the 13th People's Congress of Shanxi Province listened to and deliberated on the "Work Report of the People's Government of Shanxi Province" delivered by Lin Wu, ...[Details]
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On November 1, Yikatong Technology's first intelligent driving computing platform - Yikatong Tianqiong Pro all-in-one parking and parking intelligent driving platform, has officially begun mass produ...[Details]
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LED electronic display screen is a high-tech product integrating optoelectronics and computer technology. Its overall block diagram is as follows:
Video function description:
1. Hongy...[Details]
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Sharp, which is invested by Hon Hai, announced on Tuesday (29th) that Lianyungang Kangdazhi Precision Technology Co., Ltd., a subsidiary of its optical lens subsidiary Kangdazhi, will be sold to Liao...[Details]
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The analog type consists of a meter head, a measuring circuit and a conversion switch, as shown in Figure 1: Figure 1 Appearance of a multimeter ① Meter ② Switch The schematic diagram of the magnet...[Details]
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1 Introduction
Frequency characteristics are the most intuitive reflection of a network's performance. The frequency characteristics tester is used to measure the amplitude-frequency characteri...[Details]