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At the beginning of 2020, the epidemic swept across China, and the power battery industry, which was already at the center of the "major reshuffle", was also affected. This epidemic not only poses ...[Details]

The two sessions of the National People's Congress are about to be held. The reporter learned that Zeng Yuqun, a member of the National Committee of the Chinese People's Political Consultative Confere...[Details]

1. Experimental tasks As shown in Figure 4.9.1, switch SP1 is connected to the P3.7/RD pin. Four LEDs are connected to the P1 port of the AT89S51 microcontroller. When the power is on, the LED conn...[Details]

When measuring high-frequency signals, the alligator ground lead of the probe is the root of all evil. No matter how good the instrument is, it cannot perform at its full value. Why is this? 1. C...[Details]

Definition of Otoacoustic Emissions Kemp (1986) defined otoacoustic emissions as follows: Otoacoustic emissions are audio energy generated in the cochlea and released into the external auditory cana...[Details]

　　0 Preface 　　Low Density Parity Check (LDPC) code was first proposed by Dr. Gallager in 1962. Since the error performance of LDPC code can approach the Shannon limit, it has been widely used in wi...[Details]

If 8K in 2018 was just a fantasy, then 2019 is undoubtedly the first year of 8K. Whether it is this year's CES 2019 or AWE 2019, Chinese and foreign color TV brands are all actively displaying their ...[Details]

Compared to the iPhone, the iPad fell out of favor much earlier. Apple subsequently focused its tablets on productivity, launching a number of large-screen, stylus-supported products, and the frequen...[Details]

Distance measurement is a basic test technology in testing technology, which runs through almost every field of engineering practice. In the field of military aerospace, due to its special needs, t...[Details]

　　As shown in the figure. When the power is turned on, the power indicator lights up, and only L:L characters are displayed at the time display on the display screen. All buttons have no resp...[Details]

At the Samsung Advanced Foundry Ecosystem SAFE (Samsung Advanced Foundry Ecosystem) 2021 Forum which just ended this month, Samsung, the world's second largest wafer foundry, comprehensively introduc...[Details]

Modern life is changing with each passing day, and people cannot live without electricity for a moment. In the process of using electricity, there are problems with electricity safety. In electrical e...[Details]

With the widespread use of electronic instruments and electronic equipment, especially the popularity of household appliances, the safety of household appliances cannot be ignored. Leakage cu...[Details]

　　With the expansion of PHS protocol, PHS has continuously introduced new highlights in system and services, such as seamless switching, machine-card separation and QBOX smart wireless service. T...[Details]

SiC modules enable higher power density in motor drives The traction drive consumes almost all of the energy in an electric vehicle (EV). Therefore, the drive system must be as efficient as po...[Details]