Friends of electronic design, an introduction to electronic design

I have participated in it before, and it is recommended that you make a common module before the competition, and use it proficiently, and then communicate with your classmates more and listen to the teacher's opinions, because the teacher may help you complete the design in the end... Anyway, good luck.

To be more hands-on, Mr. Guo's ** content should be thoroughly understood, the foundation should be solid, the theory of digital electricity and analog electricity should be combined with practice, and some software should be learned, such as proteus, keil, protel. The single-chip microcomputer is very important, 51, PIC, NEC, ARM or something, 8 bits is the foundation, 32 bits is a trend, find more information on the Internet, and it is very important to buy something to practice!!

Electronic Design is a book published by Higher Education Press in 2004, and the author is Cai Mingsheng.

A circuit diagram is a kind of graphic that represents the circuit structure drawn by people with agreed symbols for the needs of research and engineering. The circuit diagram allows you to know the actual circuit situation. In this way, when we analyze the circuit, we don't have to turn the physical object over and over again, but just hold a drawing.

When designing the circuit, it can also be calmly carried out on paper or computer, and then the actual installation is carried out after confirming the perfection, and the debugging and improvement are carried out until it is successful. We can also apply advanced computer software to assist in the design of circuits, and even conduct virtual circuit experiments, which greatly improves work efficiency.

Electronic circuit design is a book published by China Metrology Press in 2005, the book is divided into five chapters and 14 chapters, including electronic circuit design methods, common components and selection, basic electronic circuit and functional circuit design, circuit anti-temperature and anti-electromagnetic interference design, circuit parameter measurement and printed circuit board automation design.

Electricity is divided into strong electricity and weak points, and generally household electricity above 220 volts is strong electricity.

Generally, 3 volts to 12 volts are weak current, and weak current is more intelligent control.

Simple understanding is that strong electricity can electrify people. Weak electricity can't power people!

I don't know, it's circuit design.

When designing an electronic circuit system, it is necessary to first clarify the design task of the system, select the scheme according to the task, then carry out the unit design, parameter calculation and device selection of each part of the scheme, and finally connect the various parts together to draw a complete system circuit diagram that meets the design requirements.

1. Clarify the design task requirements of the system.

Conduct a specific analysis of the design tasks of the system, fully understand the performance, indicators, content and requirements of the system, so as to clarify the tasks that the system should complete.

2. Option selection.

The work requirement of this step is to assign the tasks to be completed by the system to several unit circuits, and draw a block diagram of the whole machine that can represent the functions of each unit.

The important task of scheme selection is to complete the functional design of the system according to the mastered knowledge and information, according to the tasks, requirements and conditions proposed by the system. In this process, we should dare to explore, innovate, and strive to achieve a reasonable, reliable, economical, functional and advanced design scheme. And the feasibility and shortcomings of the scheme should be continuously analyzed, and finally a complete block diagram should be designed.

The block diagram must correctly reflect the tasks to be accomplished and the functions of the components, and clearly represent the basic components and interrelationships of the system.

3. Unit circuit design, parameter calculation and period selection.

According to the index and functional block diagram of the system, the tasks of each part are clarified, and the design, parameter calculation and device selection of each unit circuit are carried out.

Founded in 1994, Electronic Design Technology is a professional academic journal of electronic information sponsored by the 361 journal network of China Electronic News, and the fields of Electronic Design Technology include power supply technology, embedded systems, consumer electronics, wireless design, test and measurement, as well as EDA and design services.

The book is divided into 8 chapters, including the basics of electronic design, the application of digital circuits, programmable devices and VHDL language in electronic design using traditional methods, the application of EDA design parts Foundation and MAX+PlusII, the application of electronic analysis software Orcad PSPICE, the selection of electronic integrated system design topics, and the analysis and guidance of the National College Student Electronic Design Competition.

Brother: Are you mistaken?

It doesn't matter if it's the fourth ring or the fifth ring, the third ring is not golden.

Because gold is only used to indicate precision.

You check the color.

Because there are many times.

The color difference of the color is not obvious.

Colors can be misread.

Here's a look at the rules.

The color of the resistor: the effective value part (the first two rings of the four-ring resistor, the first three rings of the five-ring pants disturbance six-ring resistance) have 10 colors, namely: black 0 brown 1 red 2 orange 3 yellow 4 green 5 blue 6 purple 7 gray 8 white 9;

The multiples part (the third ring of the four-ring resistor, the fourth ring of the five-ring resistor, the fourth ring of the six-ring resistor) have 12 colors, which represent the power of Hu Shidan's multiplier is or 10, respectively, black 1, brown, 10, red, 10, orange, 10m...White is 10 to the ninth power, gold is 10 minus primary, and silver is 10 minus quadratic.

The error part (four-ring resistor, fourth ring, five-ring, six-ring resistor, first return and fifth ring) has 8 colors to represent the error, which are silver 10%, gold 5%, brown 1%, red 2%, green, blue, purple and gray

The temperature coefficient part (the sixth ring of the six-ring resistor) has seven colors to represent the temperature coefficient in ppm, which are: brown 100 red 50 orange 15 yellow 25 blue 10 purple 5 white 1