Is the price of a crystal oscillator generally around RMB 1.00? Some time ago, I encountered an 8M ceramic oscillator, and the supplier quoted a price of 11 yuan. I wonder what the reason is?...
Personal information: I graduated from a computer science degree and have been engaged in embedded development for three years. I am familiar with Linux, UCOS, ARM, etc. Based on the principle of tran...
The speed of SPI is set to a certain value, and the minimum is about 72M/256=300k. I want a speed of tens of K. Can any expert help me give me an answer? Can the speed of SPI be set to any value?...
I would like to recommend a [b]free[/b] PCB design software: KICAD. It can make up to 32 layers of boards, and the PCB can be viewed in 3D. It is simple and easy to use. It can generate gerber files w...
I want to add a constant string after a string defined by LPTSTR. How can I do this? The code I want to implement is as follows: LPTSTR dialno; GetDlgItemTextW(IDC_EDIT_NO,dialno,MAXLENGTH-1); dialno ...
Yesterday, a sophomore junior told me about the knowledge of capacitors. I was very inspired after listening to it. I found that I had to go through so many learning paths because of my ignorance of c...
At present, the development of wireless power supply technology for electric vehicles (EVs) is becoming more and more active. In 2012, Volvo of Sweden established Volvo Technology Japan in Tokyo as...[Details]
A single-chip microcomputer is also called a single-chip microcontroller. It is not a chip that completes a certain logical function, but a computer system integrated into one chip. In general, a c...[Details]
Today, with the increasing integration of functions, mobile phones can also be used as portable media players (PMP), digital cameras, handheld computers (PDAs), and even global positioning systems ...[Details]
Automotive applications are particularly sensitive to EMI events, which are unavoidable in a noisy electrical environment consisting of a central battery, bundled wiring harnesses, various inductiv...[Details]
introduction
Throughout the history of automotive lighting, power has always played an important role. Initially, cars only needed headlights to see the road in the dark. Later, other light so...[Details]
In order to highlight the concept of "energy saving and environmental protection" of intelligent buildings, solar street lights are designed for intelligent communities. The inclination and capacit...[Details]
In recent years, lighting has become an important area that countries around the world are targeting to promote energy conservation and environmental protection. According to statistics, about 20% ...[Details]
Although it is relatively easy to check the stability of a simple amplifier at lower frequencies, it may be much more difficult to evaluate the stability of a more complex circuit. This artic...[Details]
1. With the development of modern industry and the continuous improvement of automation, some medium and large control systems have been greatly facilitated, which not only makes control easier, bu...[Details]
1. Overview
The Virtual CAN Interface (VCI) function library is an application program interface specifically provided for the use of ZLGCAN devices on PCs. The functions in the library ar...[Details]
1 Introduction
Intelligent control instruments are one of the most commonly used controllers in industrial control. They are mainly aimed at a specific parameter (such as pressure, tempera...[Details]
1. Project Introduction
Shandong Dezhou Xingtai Paper Co., Ltd. is a newly built high-end paperboard production enterprise with domestic leading level established by Shandong Zhaodongfang Pape...[Details]
The potentiometer is an adjustable electronic component. The main functions of the potentiometer in the circuit are as follows:
1. Used as a voltage divider
A potentiometer is a continuou...[Details]
I've been studying dot matrix recently. It looks simple, but it takes a while to master it completely! The 8*8 dot matrix hardware circuit I'm making now is like this. The row is driven by 74HC138 + t...[Details]
Abstract: The output of high-range acceleration sensor is less than 10 mV under the excitation of small signal. The noise of traditional test system may cover such small voltage signal, so that hig...[Details]
Embedded System
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