matlab fft

ＰＬＣ通信测试，，做参考用，较用串口助手时方便一点(PLC communication test, for reference purposes, more convenient than using serial assistant.)

FORTRAN常用算法，方便各种离散点和格点资料相互插值。(common used interpolation written with FORTRAN language)

一个兼具有excel一样的多文档功能，同时具有word的文档编辑和格式编辑功能(One and the same with excel multiple document features, but also has word document editing and formatting editing functions)

说明：  同步压缩的改进，用于时频分析，具有较高的时频分辨率。(The improvement of synchronous compression is used in time-frequency analysis with high time-frequency resolution.)

说明：  8PSK 调制仿真程序，适合有一定基础的学者(8PSK modulation simulation program, suitable for scholars with certain foundation)

说明：  This article introduces two new configurations for precision current sources and current mirrors. Both circuits use n-p-n bipolar devices, but one provides a current source while the other provides a current sink. This permits the use of current sources in IC designs implemented with processes that do not allow p-n-p devices. Analog building blocks such as voltage-to-current converters, active loads, and sink and source current mirrors can be constructed from the new circuits using only n-p-n devices. Furthermore, because these circuits achieve the required precision without the use of high-gain amplifiers, the bandwidths of the circuits are large compared to conventional configurations. The source currents are dependent on a single reference voltage and exhibit good temperature sensivitity

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利用ANSYS模拟耦合温度场模拟的命令流，非常实用。热稳态分析(steady-state analysis)

说明：  Excel VBA 编程入门的简单介绍。初学者可以看看。(Excel VBA Programming Introduction to the brief introduction. Beginners can take a look.)

主要是实现如何绘制图像的直方图，对加密后图像效果进行分析(It is mainly how to draw the histogram of the image and analyze the image after encryption.)