Although the current EDA tools are very powerful, as the PCB size requirements are getting smaller and smaller and the device density is getting higher and higher, the difficulty of PCB design is not ...
I wrote a small test program. init.s completes the hardware initialization, and main.c prints a statement using printf. When linking with arm-linux-ld, I use "-lc" to specify the link to libc.a, but a...
Hello everyone, I am a junior student and I have just started in this industry. I have learned programming, hardware knowledge, and data structures, but no teacher has ever told me what happens when I...
[i=s]This post was last edited by Electronic_Elf on 2019-5-17 16:51[/i] [p=null, 2, left] This article mainly introduces the key points of knowledge about TTL level, CMOS level, and RS232 level, and I...
At present, power modules are developing in the direction of integration, intelligence and modularization. Power modules provide an ideal interface for the connection between weak current and strong c...
Microcontrollers (MCUs), which are widely used in automotive electronics, are rapidly facing time and cost pressures. The main advantage of using MCUs has always been to create high-level system in...[Details]
With the continuous improvement of the requirements of intelligent building security systems and the continuous improvement of people's safety awareness, indoor anti-theft has gradually attracted peop...[Details]
LED technology has made rapid progress, and improvements in chip design and materials have promoted the development of brighter and more durable light sources, and the scope of light source applica...[Details]
1 Introduction
Ultrasound refers to elastic vibration with a frequency higher than the audible frequency limit (i.e., in the frequency band above 20 kHz). The propagation process of this vib...[Details]
1 What is an LED floodlight?
LED downlights are also called spotlights, projection lamps, and spotlights. They are mainly used for architectural decorative lighting and commercial space lighti...[Details]
Stepper motors, also called steppers, use the principles of electromagnetism to convert electrical energy into mechanical energy and have been used since the 1920s. With the increasing popularity o...[Details]
1 Causes of problems with electric vehicle batteries
1.1 Caused by the battery itself
Why do we say that? In the previous issue, we learned about the working princi...[Details]
Lithium iron phosphate batteries are used as lithium-ion secondary batteries. Their main application is now in power batteries, which have great advantages over NI-H and Ni-Cd batteries.
Lithi...[Details]
With the continuous development of integrated circuit technology, integrated circuits have developed from thousands of gates to the current level of millions and tens of millions of gates. The applica...[Details]
O Introduction
Virtual instrument is a new type of instrument developed with
the development of
computer
technology, electronic measurement technology and communication technology. ...[Details]
In the industrial production process, flow measurement is a widely used measurement physical quantity. In special cases, such as vertical oil wells, when it is not easy to install probes outside the p...[Details]
: Ambiguous operators need parenthesesAmbiguous
symbol ``xxx``Argument
list syntax errorArray
bounds
missingArray
size
toolargeBad
character
in paramentersBad
file
name format in i...[Details]
With the development of my country's economy, environmental pollution caused by energy consumption is becoming more and more serious. Sulfur dioxide and nitrogen oxides emitted from coal-fired flue...[Details]
Abstract A two-dimensional sound source directional system is designed using the ADSP BF533 DSP processor. The system is based on the time difference of arrival of sound waves and uses a phase matc...[Details]
Abstract: This paper introduces the design of a new linear array CCD drive circuit based on single chip microcomputer. The system uses C8051F020 single chip microcomputer as the lower computer to c...[Details]
PCB Design
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