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IT Home reported on May 15 that Reuters and other media reported that an Israeli passenger plane suddenly made an emergency stop due to AirDrop this week. It is said that many iPhone users on the fli...[Details]
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Medical institutions need to collect, archive, process, supervise and manage a large amount of testing and treatment information every day. The records formed by traditional manual copying, thermal...[Details]
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There are many types of slide projectors in different shapes, but their optical system structures are basically the same.
1. The imaging process of a slide projector
The lens of th...[Details]
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With the development of my country's economic construction, the development and utilization of energy has become increasingly tense. Since March, many places in my country have experienced "power sho...[Details]
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15. Ultrabeam is the first gamma-ray laser and could change medicine forever
DARPA has a number of laser programs in development, but this technology may have some of the broadest civilian applic...[Details]
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The audio signal of the left and right channels is inverted and then sent to the inverting terminals of the comparators in IC2 through the input terminal (5) of lc2. The (8) and (4) pins are grounde...[Details]
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In practical applications, it is often necessary to output voltage, current and other signals. Especially in the industrial control industry, 4-20mA conversion is often used. If the AD421 chip is use...[Details]
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The switch mechanical characteristic tester displays the order of switching and the actual switching time of each break, providing a basis for the maintenance and debugging of three-phase different p...[Details]
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In the field of smartphones, especially in the high-end market, OLED is poised to completely replace LCD and become the new dominant screen panel. Laptops are also increasingly using OLED, and in the...[Details]
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Battery cost is less than 2 million yen
Nissan is particularly committed to making the main components, namely lithium-ion rechargeable batteries and motors, in the development of LEAF. In...[Details]
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Capacitor C1 and resistor R1 are used in parallel, which is a typical capacitor step-down circuit. After the AC power is stepped down, rectified by VD1~VD4, and filtered, it is provided to the voltag...[Details]
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1 Device characteristics
The DS12C887 real-time clock chip has rich functions and can be used to directly replace the clock calendar chip DS12887 on the IBM PC. At the same time, its pins are als...[Details]
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Recalibration of Tecsun Radio
Tecsun
Latest
Receiver owners should be aware by now that
the PL-990x, H-501x, and the latest PL-368 (also sold by CountyComm as the GP7/SSB) of...[Details]
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In embedded software technology, C++ language has high programming efficiency. However, to achieve high efficiency, there are still many issues that need special attention. First of all, we should ...[Details]
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A soft starter is an electrical device used to start a motor. Its main function is to reduce the current impact when the motor starts and reduce the damage to the power grid and mechanical equipmen...[Details]