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This article takes the mf50 pointer type as an example to introduce the specific method of using a multimeter under amateur conditions to quickly determine the polarity of an electret microphone and ...[Details]
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According to foreign media reports, Samsung's system Beta test version operations manager revealed that the Samsung Galaxy S20 series will not push the One UI 4.0 beta version next, but will directl...[Details]
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With
the development of
laser
technology and electronic technology, laser
measurement
has developed from static point measurement to dynamic tracking measurement and 3D stereo measur...[Details]
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1How to choose an oscilloscope? Oscilloscope selection: Determine the oscilloscope's bandwidth, sampling rate, record length, waveform capture rate, Math, Decode function and other parameters based o...[Details]
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Recently, Tesla released a futuristic electric pickup truck on the other side of the ocean. At the same time, at the 2019 Guangzhou Auto Show, various car companies also showed off their own "top pro...[Details]
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Through experimental comparison, some issues that need to be paid attention to when using an oscilloscope probe to test power supply output ripple are found. A more accurate way to test ripple is t...[Details]
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As a general rule, you should put these things in header (.h) files:
Macro definitions (preprocessor #defines)
Structure, Union, and Enumeration Declarations
typedef declaration
External func...[Details]
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The principle of speech recognition chip
The voice recognition chip is also called voice recognition IC. Compared with the traditional voice chip, the biggest feature of the voice recognition ...[Details]
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Huawei announced its self-developed operating system HarmonyOS. Recently, Huawei held a media event in London, UK, to introduce HarmonyOS to the public. Hongmeng OS is seen by Huawei as a futuristi...[Details]
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The standard 51 MCU has two timers, T0 and T1. T is the abbreviation of Timer. Now many 51 series MCUs will add additional timers. Here we will talk about timers 0 and 1. As mentioned earlier, each f...[Details]
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In the major update specifications of USB 3.0 by USB-IF, the USB 3.0 interface upgrade not only improves the transmission performance that most industry players are concerned about, but also grea...[Details]
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Do you still remember the once popular light field camera Lytro? “Take a photo first, focus later” was definitely black technology at that time! The principle is roughly as follows: the came...[Details]
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Remote control power supply circuit composed of LM304
The figure shows a remote control power supply circuit composed of LM304. Point u and pin 8 are connected to the ground and negative termin...[Details]
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According to foreign media reports, General Motors has applied for a patent for a device called "Shape Changing Mirror". This is a bendable exterior rearview mirror that can automatically switch to a...[Details]
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According to foreign media MacRumors, whistleblower Jon Prosser said that Apple is currently testing a new Face ID that allows users to unlock their iPhones while wearing masks or fogged glasses. Pro...[Details]
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