A few days ago, I talked with a classmate who has been interning in the company about the development of the electronics industry in the next few days. He said that the technical director of their com...
The device structure is defined as follows: typedef struct smschar_dev { volatile int pending_messages; //!private_data; spin_lock(&dev->lock); if(wait_event_interruptible(dev-wtq,!list_empty(&dev->pe...
I am a beginner in 430 single chip microcomputer. When writing ADC program, there is the following code in the interrupt: { static unsigned int g =0; g++; if(g>=10) { g=0; } ADC_Results[g]=ADC12MEM0; ...
In the previous post, we created a new project and set the background image, but did not assign values to the displayed characters. Today, we will use the serial port assistant to send command lines t...
[i=s]This post was last edited by jameswangsynnex on 2015-3-3 20:02[/i][font=Verdana, sans-serif][size=4][color=#000000][backcolor=white]At present, the emerging embedded touch screen technology can b...
[i=s]This post was last edited by dontium on 2017-1-9 23:26[/i] [b][size=4]For example, a single-pole-to-throw relay has a normally open terminal, a normally closed terminal, and a common terminal. [/...
1. Overview
Will passive devices
produce nonlinear intermodulation distortion? The answer is yes! Although there is no systematic theoretical analysis, it has been found in engineerin...[Details]
As cellular phones become more advanced, the power consumption of the system during operation and the power consumption during standby are also increasing. Therefore, the power management design of...[Details]
1. Background:
The instrument system parameter detection and control of the chemical production workshop of Tangshan Coal Gas Coking Plant are all analog instruments, some of which are eve...[Details]
1 Introduction
PROFIBUS is an international, open, and manufacturer-independent fieldbus standard. It is widely used in manufacturing automation, process industry automation, and automatio...[Details]
1 Introduction
There have been many studies on the detection and protection of power grid short circuit and line fault. The short circuit, overload and overvoltage protectors on the market have ...[Details]
Single-chip microcomputers are widely used because of their small size, powerful functions and low price. This article introduces the method of designing a micro electronic piano using the AT89C51 sin...[Details]
Motors are important products that convert electrical energy into mechanical energy to achieve automation, and they are widely used in industrial control, medical electronics, white a...[Details]
Since AC mains power may experience power outages, voltage sags and surges, continuous undervoltage and overvoltage, and frequency fluctuations during supply, these factors will affect the continuous ...[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]
0 Introduction
Under normal circumstances, the three-phase power in the power system is symmetrical, and they meet certain amplitude and phase conditions; but when the load changes, the syst...[Details]
With the rapid development of the national economy, lifting and hoisting operations are used more and more frequently and widely in various fields of economic construction. China has continuously expl...[Details]
The emergence and development of street lamps are inseparable from the prosperity and progress of cities, which makes street lamps useful. Conversely, street lamps also make the night of the city n...[Details]
Power supply is often the most easily overlooked link in the circuit design process. In fact, as an excellent design, power supply design should be very important, which greatly affects the perfor...[Details]
With the popularity of digital appliances, rechargeable batteries can be seen everywhere in people's daily lives and have become one of the indispensable daily necessities.
This article gives ...[Details]
There are many types and styles of digital voltmeters in design and development. Traditional digital voltmeters have their own characteristics. They are suitable for manual measurement on site. Tra...[Details]
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