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After powering on, the self-test passed, the reflection measurement worked normally, but the transmission measurement worked abnormally, the signal was about 30dBm lower and the curve was uneven. A...[Details]
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Today, I bring you the unboxing photos of the iPad Pro 12.9-inch white Magic Keyboard. The moment I got it, I was amazed by the pure white. Compared with the dull black Magic Keyboard, the white one ...[Details]
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ARM7 BEEP Program Analysis
In the schematic diagram, we can see that the buzzer is connected to the P07 port, and the interface is short-circuited.
#include "config.h"
#define BEEP 1 7 // P0....[Details]
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Introduction to Optical Time Domain Reflectometer MTS6000 The highly integrated and modular MTS-6000A (V2) test platform can be used in all phases of the fiber network life cycle. It provides field s...[Details]
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We have just implemented the allocation, reading, writing, and release functions of the Linux system memory. Next, we will complete the IO port mapping and IO memory mapping in one go. Come on!
1. C...[Details]
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RC series-parallel frequency selection network oscillation circuit
Disconnect the RC series-parallel network and measure the amplifier's static operating point and voltage gain.
(3) ...[Details]
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The welding requirements for
blue
and green
LEDs
are the same as those for
white LEDs
. Based on the general level of white LED welding, there are such basic requirement...[Details]
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Editor's note: At CES2023, car manufacturers and chip manufacturers have launched the latest products around smart cars . In the trailer park of the Las Vegas Convention Center, there were two cars o...[Details]
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Today, some netizens discovered that a new phone named vivo T1x has appeared on platforms such as JD.com. It is expected to be released soon and may also be a product prepared for Double Eleven...[Details]
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Due to the actual needs of engineering, high-efficiency miniaturized ultra-wideband high-power microwave antennas have become a research hotspot. For high-power miniaturized antennas, the technica...[Details]
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Smartphones are becoming more and more popular and are becoming an indispensable tool for people's lives and work. According to statistics, the smartphone market grew by about 30% in 2012, making i...[Details]
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0 Preface
Automatic switch control can automatically open or cut off the switch according to the situation, which is conducive to saving manpower and improving control efficiency, bringing convenie...[Details]
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With the widespread application of non-isolated photovoltaic grid-connected inverters, the DC injection problem has also received increasing attention. IEEE Std 929-2000 stipulates that DC injectio...[Details]
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Honda and General Motors have achieved a new breakthrough in their cooperation in the field of hydrogen fuel cell technology. They will start producing a new generation of hydrogen fuel cell system t...[Details]
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From November 7 to 8, the 2024 China Automotive Software Conference, co-hosted by the China Association of Automobile Manufacturers and Anting Shanghai International Automobile City, was held in Ji...[Details]
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