[backcolor=rgb(188, 211, 229)]1. Since the kernel is a protected block in memory, we must communicate the commands we enter with the kernel through "Shell" so that the kernel can control the hardware ...
[i=s] This post was last posted by chenzhufly on 2016-1-3 15:22 Edit[/i] [align=left][size=4] [color=#0000ff] 2015[/color][color=#0000ff] has quietly left us, and time has opened the door to 2016. Loo...
I browsed the forums and found that when using the LPC1313 series timer, it is said to configure the I/O port first. But I want to use the query method to implement a function such as delaying for sev...
Nowadays, anyone who has a little experience in circuit design will make samples and PCBs. Regardless of the design of the PCB or circuit (as we all know, there are good and bad ones), what is making ...
What is the full name of the serial port test software? Where can I download it? Thank you. I recently don't know how to send a "BREAK" signal from the PC to the serial port. It is said that this test...
Some people may complain that there is no us-level delay and us-precision time measurement in raw-os. In fact, this mechanism has been available for a long time. You only need to turn on a macro defin...
introduction
my country has a vast territory and a large population. The scale of housing construction is huge, and the amount of residential construction is large and wide. It is still on t...[Details]
Battery life is critical for portable applications. For applications such as smoke detectors, security devices, and thermostats, factory-installed batteries need to last for more than 10 years. The...[Details]
We know that microcontroller development tools generally include real-time online emulators and programmers. Among them, online emulators are very good tools, but they are also more expensive...[Details]
In the previous series, we have listed some basic knowledge of C language in Tables 1 to 3. We hope that beginners can strengthen their memory of the above tables and gradually learn to use them wh...[Details]
The automotive lighting and signal control system is responsible for controlling the vehicle's lighting, signal lights, electric horns, reversing and brake buzzers. Traditional automotive lighting...[Details]
The typical fault troubleshooting listed below is for reference of maintenance personnel.
When the computer is turned on, the indicator light is off and there is no screen display
Mainte...[Details]
Introduction
Nowadays, people pay more and more attention to the security alarm system, and people have higher and higher requirements for the functions and performance of the alarm. This paper prop...[Details]
Traditional
virtual instruments
consist of a data acquisition
board
based on PCI bus and
corresponding software. However, with
the rapid development of
computer
network techno...[Details]
0 Introduction
Ultrasonic waves
are mechanical waves with a frequency of more than 20KHz, and the propagation speed in the air is about 340 m/s (at 20°C). Ultrasonic waves can be gene...[Details]
Analysis of the three core aspects of digital TV transmission standards
According to the differences in regionality, transmission method and modulation method, the transmission method needs to...[Details]
Distributed Wireless Communication System (DWCS) uses distributed antennas, distributed processing control, joint signal processing and other technologies to improve the system's spectrum efficie...[Details]
For battery-powered portable devices, in addition to breaking through the limitations of processing power, the performance of portable system power supplies also needs to be continuously improved. ...[Details]
1 Load Regulation
Changes in power supply load will cause changes in power supply output. When the load increases, the output decreases, and vice versa, when the load decreases, the output inc...[Details]
summary
This article will briefly analyze the success and shortcomings of high-frequency DC-DC switching power supplies in the process of miniaturization (the second basic goal), and propose m...[Details]
The power consumption of a switching power supply includes fixed losses caused by parasitic resistances such as semiconductor switches, magnetic components, and wiring, as well as switching losses ...[Details]
Programming Basics
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