What is the maximum output current of USB? If I use it to power a microcontroller development board, what should I pay attention to? I am not very good at it, so please give me some advice....
The 2009 TPCA Advanced Technology Seminar and Benchmark Forum officially opened on the 6th. The first speech was opened by Dr. Jiang Xugao of Prismark, with the theme of PCB technology development tre...
I want to mute the sound, but calling waveoutsetvolume(0,0) doesn't change anything. How can I mute the ringback tone so that the caller can't hear it?...
[align=left][font=宋体][size=14px]It is said that when Pan Jinlian hooked up with the hateful third party Ximen Qing, Wu Dalang felt that his marriage life was a complete failure. He could not beat Xime...
I've been playing around with C8051 microcontrollers recently. AD conversion involves a precision problem. The reference voltage is 3.3V, and the voltage range to be sampled is 0~ 48V. The precision i...
Recently, the " ZTE
incident"
caused by the Sino-US trade war
has caused heated discussions in the electronics industry. It not only reflects that Chinese companies are lagging behind in the...[Details]
In Windows environment, the source code is encoded in UTF-8. If the source file created by STM32CubeMX contains Chinese comments, then using STM32CubeMX to regenerate the source code will cause the C...[Details]
I slightly changed the lyrics of Yu Quan's song "Running", which seems to be
a reflection of the current state of
Huawei Cloud
. At the annual Huawei Analyst Conference held on April 17,
Zh...[Details]
1 Introduction Due to the special working environment of coal mine production, the production process is more dangerous and unsafe than the general industry. With the continuous increase in c...[Details]
Every era has anxiety that has nowhere to go. Let's follow the embedded editor to learn about the relevant content.
The anxiety of the post-Internet era is that if you don’t revolutionize ...[Details]
The day before yesterday, another mainland technology company submitted a prospectus to the Hong Kong Stock Exchange. The company is called "Jia Nan Creative (hereinafter referred to as 'Jia Nan')"...[Details]
WPG Holdings announced that its subsidiary Youshang has launched a wireless smoke alarm solution based on STM and Semtech . With the development of the national economy and the enhancement of...[Details]
The STM32 watchdog has two WWDG and IWDG. The biggest difference between the two is that IWDG has only one lower limit for feeding, while WWDG, as the name implies, must be fed within a range to ensu...[Details]
environment: Host: XP Development environment: MDK4.23 MCU:STM32F103CBT6 illustrate: Collect AD through pins PA1 and PA2. Collect AD 10 times for each channel. #include "ad_driver.h" //Global ...[Details]
One addend is in the on-chip RAM 40H, 41H, 42H units, the other addend is in the on-chip RAM 43H, 44H, 45H, and the sum is stored in the 50H, 51H, 52H units, with the carry bit stored in 00H. Please ...[Details]
Since 2018, the field of artificial intelligence chips has been very lively. Especially in China, the rich vertical application scenarios have provided fertile ground for the development of AI chip...[Details]
The clock sources are LFXT1 (low frequency or high frequency), XT2 (high frequency), DCO (digital control). The clock signals are ACLK (auxiliary clock), SMCLK (subsystem clock), MCLK (system clock)...[Details]
Cybersecurity is undoubtedly one of the most important topics for IT experts. This is true for security engineers, CISOs, CIOs, and even CEOs. Let’s learn more about it with the security electronic...[Details]
/*=========================================================== 20x4 character LCD main program, compilation software (I CC AVR_6.31) CPU internal crystal oscillator 8M data line B0~B7 connects PORT...[Details]
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