image. Customers can easily grasp the design ideas of this product, capture the highlights of some high-end designs, and use them for their own purposes. They can also easily integrate their own unique designs to develop higher-end products.The reverse PUSH Service of Shenzhen century core principle diagram starts with the chip signal as the clue, that is, the chip usage is first identified, and the pin signal name is marked based on the signal process based on the experience, and the function
directly displayed in the center each time the ad10 software is started. I will mainly introduce shortcut key operations, E + O + S is the coordinate origin setting (the input method is switched to the English format), and the PCB layer is switched to the keep-out layer (the switching method, one is the * key in the keypad, the other is to click the keep-out layer in the work window with the mouse), and th
Address: http://blog.csdn.net/devincoder/article/details/6598052
The final purpose of PCB layout is to produce applications. When it becomes a formal and valid product, layout's work is regarded as a paragraph. In layout, which common key points should be paid attention to so that the files drawn by myself can effectively comply with the general PCB processing factory rules, so as not to cause unnecessary a
PCB Optimization Design (i.)2011-04-25 11:55:36| Category: PCB design SMT technology is now very mature and widely used in electronic products, therefore, electronic product designers need to understand the SMT technology common Sense and manufacturability design (DFM) requirements. SMT process products, at the beginning of the design should be integrated into consideration of the production process, raw ma
In today's fiercely competitive battery power supply market, designers often use dual Panels due to cost restrictions. Despite its significant advantages in dimensions, noise, and performance, the multi-board (Layer 4, layer 6, and Layer 8) solution has prompted engineers to rethink their wiring strategy and adopt dual panels. In this article, we will discuss the correct use and incorrect use of the Automatic wiring function, the design strategy of the current circuit when there is no ground pla
Although semiconductor integration is becoming increasingly high, many applications also have ready-to-use on-chip systems, while many powerful and out-of-the-box boards are becoming more accessible, but many use cases of electronic products still require the use of custom PCBs. In one-off development, even a common PCB can play a very important role. The PCB is the physical platform for the design and the
Despite the increasing integration of semiconductors, many applications also have ready-to-use on-chip systems. At the same time, many powerful and out-of-the-box development boards are increasingly accessible, however, in many use cases, the application of electronic products still needs to use custom PCB. In one-time development, even a general PCB can play a very important role.
ObjectiveThe last two days using AD14 software designed a Bluetooth anti-loss circuit board (PCB) drawings, the middle of some details in this document, to facilitate the next design of the PCB reference. Also hope to give the layman's classmates or just into the students a macro view of the General circuit board design process of the article.First, install AD14,
In this article, we will discuss the PCB cabling design methods and requirements. The layout design of components and the direction of electrical connections may produce different results, and the results may vary greatly, therefore, the structure of printed circuit board components should be correctly designed and the correct PCB design should be selected.
I. Design of layout structure of printed line comp
After four years of graduation, although the driver of embedded real-time software systems has been working for some time, the title of "Hardware Engineer" has always been available. In fact, it is a bit embarrassing, not to mention the depth of the hardware, in addition to a considerable amount of time to design the hardware circuit, more importantly, the PCB layout. Think about the circuit board, from the
As a PCB engineer, what should I pay attention to in lay PCB?
1. After the power supply comes in, first go to the filter capacitor. After the filter capacitor is obtained, it is sent to the following device. Because the cabling on the PCB is not an ideal wire, there is a resistor and a distribution inductance. If the power is obtained from the front of the filte
Address: http://blog.csdn.net/happyflovef/article/details/5584479
Design of multilayer PCB at, December 30
Before designing a multi-layer PCB, the designer must first meet the requirements of the circuit scale, circuit board size, and EMC.Determine the structure of the circuit board, that is, the four-layer, six-layer, or more layers of the circuit board. After determining the number of layersDeter
, mechanical structure, heat dissipation, EMI (electromagnetic interference), reliability, and signal integrity of the PCB Board must be comprehensively considered.
8. Automatic Layout is available in almost every piece of software, but as a PCB engineer, you should discard it and make the layout more effectively and reasonably.
9. Generally, components
line whether to take the best measures, such as the shortest length, add protection line, the input line and the output line is clearly separated. Analog circuit and Digital circuit section, whether there are separate ground. Whether the graphics (such as icons, labels) added to the PCB will cause short-circuit signals. Modify some of the undesirable alignments. Whether the process line is added to the PCB
necessary to consider how to fully consider the signal integrity factors in the high-speed PCB design process and take effective control measures to improve the circuit design quality.
The powerful Cadence speectraquest simulation software and the IBIS model are used to simulate and analyze the signal integrity of High-speed signals, which is an efficient and feasible method to detect signal integrity prob
compiled first, which files need to be compiled, which files need to be recompiled, and even more complex function operations, and the benefit of makefile is that "automated compilation", once written, requires only a make command, The whole project is completely automatically compiled, which greatly improves the efficiency of software development. Make is a command tool that is a command tool that interprets instructions in makefile.Makefile to tell
swapped out in the next loop. Second, makefileMakefile defines a set of rules to specify which files need to be compiled first, which files need to be compiled, which files need to be recompiled, and even more complex function operations, and the benefit of makefile is that "automated compilation", once written, requires only a make command, The whole project is completely automatically compiled, which greatly improves the efficiency of software deve
--------------------------------------------------------------------------------------------------------------- ---------------------Sheet TechnologyThe following parameters or tables represent only part of the plate process and simulation selection parameters, the actual production will have a certain difference (but not a small deviation!). )The simulation software uses Polar's "Si9000".1oz=28.35g,1oz copper thickness refers to 1 square fe
requires the use of ' \ R ', ' \ R ' and ' \ n ' is not the same, the former is a carriage return, the latter is a newline. Use ' \ R ' to control the output of the buffer and, when appropriate, use Fflush to force the buffer output.The following is the result of its operation:650) this.width=650; "title=" 7.png "src=" Http://s5.51cto.com/wyfs02/M02/82/41/wKioL1dPrNXTqAaXAABF_x6jewY936.png " alt= "Wkiol1dprnxtqaaxaabf_x6jewy936.png"/>650) this.width=650; "title=" 8.png "src=" Http://s2.51cto.co
#include #include #include #include #define RUNNING 0#define READY 1#define WAIT 2typedef struct PCB{The identification number of the int pid;//processint priority;//The priority of the process, the greater the value, the higher the priority levelint pstatus;//The state of the processstruct PCB * next;//pointer to next process}PCB;
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