用栈实现计算器

SN74HC595D For alios things Code

IQ正交解调频率程序，通用解调程序。IQ正交解调频率程序，通用解调程序。IQ正交解调频率程序，通用解调程序

交错网格时间二阶空间十二阶声波方程数值模拟，加PML吸收边界，倾斜地层(Staggered grid space second-order time 12 order acoustic equation numerical simulation of the PML absorbing boundary, tilted strata)

利用OpenGL技术绘制了五个红色球体，每个球体和观察点的距离各不相同(Using the OpenGL technology made five red ball, every sphere and the distance of observation points each are not identical)

多文件上传，一次可以上传多个文件，并且各个文件显示各自的上传进度(Multi-file upload, one can upload multiple files, and each file upload progress display their)

使用STM32F407实现LD3320的语音识别(Using STM32F07 to run LD3320 of ASR)

1.实现简单，没有加入多线程。一个线程爬取+处理，确实有点慢。 2.有些文件有点大，下载过慢，所以在程序对大文件，没有进行下载。你可以在程序里改。

使用电脑的离线式多路电话计费软件。一个计费板插在电脑的PCI扩展槽上，多路电话线接入，实施计费。(use computers offline multi-way telephone billing software. Billing a plate inserted in a computer PCI expansion slot, multi-line access, billing implementation.)

互相关与自适应滤波测量流速的比较研究，，分别讨论了互相关法和自适应滤波时延估计法测量流速(Cross-correlation to compare and measure the flow rate of adaptive filtering, respectively, discussed the correlation method and adaptive filtering delay estimation method measuring the flow rate)

sed为UNIX系统上提供将编译工作自动化的编译器。此为中文手册，对SED做了详细的叙述(sed for the UNIX systems to provide automation of the compilation of the compiler. This is a Chinese manual on a detailed description of SED)