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On the morning of April 12, Apple's employees in the United States began to return to the office today, ending Apple's two-year work-from-home state during the COVID-19 pandemic. Last month, ...[Details]
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The field of wireless headphones may welcome a new player. Bloomberg cited people familiar with the matter as saying that Amazon is developing wireless headphones that will be equipped with voice a...[Details]
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As people's requirements for portable music players increase, MP3 players are favored by music lovers for their small size and good sound quality. At first, MP3 files were played by computers. Late...[Details]
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White LEDs
are widely used in small
liquid crystal
display
(
LCD
)
panels
and keyboard backlight and indicator applications.
High-brightness LEDs
...[Details]
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1. The improvement of LED chip efficiency and the expansion of LED application technology will inevitably change the existing LED packaging technology
The current packaging forms of LED LAMP a...[Details]
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At the same time, it achieves the industry’s best low-noise characteristics and ultra-fast reverse recovery time. 600V withstand voltage Super Junction MOSFET "R60xxRNx Series" Helps equipment wit...[Details]
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1. Getting to know MMU MMU is the memory management unit, which is a "medium" that converts virtual memory into physical memory. Why do we need virtual memory? Because in embedded systems, there are ...[Details]
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Urban development is inseparable from a high-quality underground pipe network system. However, the problems of outdated infrastructure and backward management technology have long existed. Frequent...[Details]
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According to a report by Bloomberg on January 21, Intel's revenue in the first quarter of 2021 was approximately US$17.5 billion (excluding the memory chip division). According to data compiled by Bl...[Details]
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Digitally controlled DC regulated power supply is one of the commonly used devices in electronic technology. Most of the devices currently used are used to adjust the voltage value through a knob s...[Details]
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Abstract: This paper studies a new type of high-frequency switching charging power supply suitable for the DC system of substations, explains the design principles of the main circuit and control syst...[Details]
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Advanced sensorless algorithms based on back electromotive force (BEMF) estimation require a minimum BEMF to accurately estimate the position of the rotor in order to drive the BLDC motor in 180-de...[Details]
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Whether in daily life or in industrial production, temperature is a very important indicator. Therefore, the collection, measurement and transmission of temperature data have always been the focus o...[Details]
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For Tektronix oscilloscope usage: 1. After power on, press Auto Set 2. Select CH1 or CH2 according to the probe. If CH1 is selected, the options on the left display are: Coupling: Three options: DC, ...[Details]
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01
Information security requirements
This chapter mainly introduces the information security requirements from four aspects: hardware security, system security, communication security, an...[Details]
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