信道估计

美国国家仪器（national instrument）三大软件之一的TestStand 3.5版本的用户手册。 该手册是TS中最详细的手册。(National Instruments (national instrument), one of the three software versions of TestStand 3.5 user' s manual. TS of the manual is the most detailed manual.)

one dimensional fluid flow of a liquid

本设计是基于单片设计的一个能实现语音存储和回放功能的系统，利用宏晶公司生产的STC90系列单片机作为主控制器，使用具有录音和放音功能的ISD4004语音芯片，能够显示32个字符的LCD1602显示器件和能对音频进行无失真的放大的TDA2822M差分放大器设计而成的。首先我们利用STC90C516RD+单片机的优越的控制性能来控制ISD4004语音芯片，通过单片机向语音芯片发送指令来完成ISD4004芯片的录音和放功能，用LCD1602来显示单片机对ISD4004的操作状态，使用TDA2822M将ISD4004芯片输出的音频进行无失真的放大的思路来进行语音存储和回放系统设计的，用Circuit Design Suite 10.0(Multisim)软件来绘制该系统的电路，用Keil uVision5软件来编写硬件程序。电路图和程序都完成后使用万用洞洞板依据电路图来焊接实物电路，实物完成后载入芯片程序直接进行实物调试，使用实物调试更容易找出问题和系统设计的缺陷，出现问题时可以通过模块化思想轻松查找到故障原因，并进行修复故障。ISD4004芯片录音时基于多电平存储技术实现的没有传统的数字录音过程中A/D转换带来的量化噪音和变色的金属音色。该系统录取的声音播放出来后和原音的音色、音调保持一致不失真。(This design is based on the single chip design of a voice storage and playback system, using STC90 series MCU produced by Hongjing Company as the main controller, using ISD4004 voice chip with recording and playback function, can display 32 characters LCD 1602 display device and can amplify audio without distortion. TDA2822M differential amplifier is designed. Firstly, we use the superior control performance of STC90C516RD + MCU to control the ISD4004 voice chip, send instructions to the voice chip through MCU to complete the recording and playback function of ISD4004 chip, use LCD1602 to display the operation status of MCU to)

使用同位网格SIMPLE算法计算阶梯流动(Calculation of step flow using SIMPLE algorithm with collocated grids)

ejemplo de codigo para proteger una presentacion en power point

生成余弦光栅的程序和各种光栅的程序，欢迎下载(Generate cosine grating procedures and a variety of grating procedures, welcome to download)

在matlab中读取grib文件,GRIB 码是与计算机无关的压缩的二进制编码,主要用来表示数值天气预报的产品资料。现行的GRIB 码版本有GRIB1 和GRIB2 两种格式。(Reading grib file in matlab, GRIB code is a computer-independent compression binary code, which is mainly used to represent the product data of numerical weather forecast. The current version of GRIB code has two formats: GRIB1 and GRIB2.)

编译原理NFA到DFA的转换源码-compiler theory NFA to the DFA source conversion

fpag usb blaster document

自己调研的关于太阳能薄膜电池的技术，制造设备，发展前景的PPT，很翔实(Their own research on thin film solar cell technology, manufacturing equipment, the development prospects of the PPT, very informative)