[i=s]This post was last edited by sky999 on 2019-7-15 17:52[/i]When only 5V is powered, the LED does not light up. When 220V is powered, the LED lights up. If the neutral wire is disconnected and the ...
Are audio amplifiers, Class A, Class B, Class C, Class AB, Class D, OTL, etc. circuits a type of DAC amplification? What are the similarities and differences with ordinary DAC analog voltage amplifica...
Wide-area wireless network operators are increasingly involved in mobile broadband access and rich multimedia services. These services pose great challenges to wireless networks. Operators need to mak...
1. Flash specificationsThe main chip used in this article is N32L436RBL7, and the flash size is 128k
The flash is divided into 64 pages, numbered 0-63, and each page is 2k.2. Precautions for flash ope...
In the EMC design of RS-485 ports, we need to focus on three factors: electrostatic discharge (ESD), electrical fast transients (EFT) and surge. The International Electrotechnical Commission (IEC) spe...
As shown in Figure 1, the input signal VIN is given by the DSP chip. In Figure 1, R3 and C1 as well as R2 and C3 form a two-order low-pass filter. What is the principle of this filtering? It is easy t...
#include reg51.h #include "main.h" #include "intrins.h" //Use T2 timer 2 to control the baud rate of serial port 1 #define FOSC 18432000L //System frequency #define BAUD 9600 //Serial port 1 bau...[Details]
According to recent leaked pictures by Coolapk netizen @小小的串串, there is a 5G version of Huawei P50 Pro, but it is only Huawei's internal engineering machine test version (IDEALS Logo, non-retail ...[Details]
Xu Lingjie, co-founder of GPU startup Biren Technology, has resigned recently. This is the second co-founder of Biren Technology to leave following the resignation of Jiao Guofang, general manager of...[Details]
According to Nikkei reports, Apple’s iPhone 15 Pro series models to be launched in 2023 will be equipped with Sony’s latest and most advanced image sensors, which can bring better imaging quality and...[Details]
In the process of writing drivers, we will use a sentence to modify the entry function and the exit function: module_init and module_exit. Then, after modification, the kernel can call the entry fu...[Details]
Fault protection is an important function that all power supply controllers have. Almost all applications require overload protection. For peak current mode controllers, this function can be easily...[Details]
From the internal logic structure of ARM , we can see that compared with other microprocessors, such as 8051, when performing data logic addition and subtraction operations, it has a barrel shifter. ...[Details]
Recently, a report said that Apple's next-generation MacBook Pro models will use the "M1X" chip and remove the "MacBook Pro" logo from under the display. "Apple plans to name the MacBook Pro chip M...[Details]
start.S file: .globl _start _start: 1. Hardware-related settings: tell the CPU the base address of the peripheral 0 ~ 0x6fff ffff is the memory address space, 0x7000 0000 ~ 0x7fff ffff is the periph...[Details]
Overview The developer of STM8 microcontroller is STMicroelectronics (ST), which was launched in 2009. It has the advantages of 3-stage pipeline architecture, high cost performance, and convenient de...[Details]
Fever Fans Network reported (Text/Zhang Ying) is the key to empowering the future development of the oT ecosystem! On November 21, the 2023 Sensc Ecological Conference was grandly held at the Renai...[Details]
An oscilloscope is a very versatile electronic measuring instrument. As the saying goes, electricity cannot be seen or touched. But an oscilloscope can help us "see" electrical signals, making it eas...[Details]
With the development of science and technology, people love more and more technological products, and their functions are becoming more and more abundant. However, in order to achieve rich functions,...[Details]
Recently, everyone is talking about car electronic fences, so this issue of Yamei Technology will talk to you about "car electronic fences". As a fleet manager, what are their concerns? I believe tha...[Details]
PC: CentOS5.4
Kernel: Linux 3.0.1
Development board: ok6410
Cross compiler: arm-linux-gcc 4.4.1
1. Make menuconfig to remove the original touch screen driver
- Device D...[Details]
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