PCB Electronics Designing

EMC in the PCB board should be designed to any electronic devices and systems integration part of the design, which attempts to make products that meet EMC than the other method is more cost-effective. Electromagnetic Compatibility Design of the key technology is the source of electromagnetic Read more...

 1. Way choice 
Starts modelsim the se simulation tool, chooses in the main window[file]- Read more...

The N odd number frequency division, must make the dutyfactor is 50%, realizes by the following mentality:
A, by an original clock cycle N time of achievement processing period; (function which counts with counter)
B, the production dutyfactor is N2:　N2 1 (division takes entire) Read more...

1. hardware design basic principle

1. Speed and area balanced and principal of reciprocity: If a design the succession remainder is big, can run the frequency is higher than the design requirements far, can be possible to reduce the entire design consumption through the module Read more...

The modernized production and the scientific research enhance day by day to the image gathering system’s request. The traditional image gathering card speed is slow, the processing function is simple, cannot satisfy the special request well, therefore, we have Read more...

    In recent years, along with the integrated circuit technology’s development, carried on the chip or the system design with the traditional method has not been able to satisfy the request, urgent needs to raise the rated capacity. Under such technical background, can reduce the design Read more...

Introduction
　　Along with computer and microelectronic technology development, electronic design automation EDA (Electronic Design Automation) and programmable logical component PLD (Programmable Logic Device) the development is rapid, uses the EDA software to carry on PLD skilled the Read more...

TESTBENCH grammar reference

always
module clock_gen;

reg clock;

//Initialize clock at time zero
initial
clock = 1 ‘ b0;

//Toggle clock every half cycle (time period = 20)
always
#10 clock = Read more...

      With together circuit wafer on, because the holding wire the high frequency burr which walks the line to be excessively long produces we may through, in the close input end connects 100 ohm about the resistance to filter. But regarding the board outside the signal, or in Read more...

     This article take ModelSim the SE 5.6 editions as a foundation, introduces ModelSim SE the most essential usage, profound I cannot.
    After you install ModelSim SE, may the beginning way establish yours ModelSim SE as yours job category (for example e:\verilog), the concrete Read more...