hp688黄色网页程序

双用户，包括mc-cdma的扩频，调制，加前缀，通过瑞利信道，去前缀，解调，解扩部分

AN2120, Connecting an M68HC08 Family Microcontroller to an Internet Service Provider (ISP) Using the Point-to-Point Protocol (PPP).

食堂饭卡消费系统完整原代码，VC6.0+SQL+MSCOMM。-Canteen consumption饭卡integrity of the original system code, VC6.0+ SQL+ MSCOMM.

USB总线与429总线数据转换的USB端（基于PDIUSBD12）的WDM驱动程序-USB bus with 429 data conversion USB terminal (based on PDIUSBD12) WDM

短波信道watterson模型的建模仿真，已经编译通过。-Watterson HF channel modeling and simulation model has been compiled through.

一个圆周卷积的代码~调用形式为y=juanji(h,x1,M) 其中，h和x1为输入，h为滤波器系数，x1为输入采样信号，输出为y,M为输入信号x1的长度。-A circular convolution of the code to call the form of y = juanji (h, x1, M) of them, h, and x1 for the input, h for the filter coefficient, x1 sampling input signals, output y, M for the input signal x1 length.

用VC实现PC并行端口数字信息的输入/输出.-With VC realize PC parallel port digital information input/output.

Jitter is extremely important in systems using PLL-based clock drivers. The effects of jitter range from not having any effect on system operation to rendering the system completely non-functional. This application note provides the reader with a clear understanding of jitter in high-speed systems. It introduces the reader to various kinds of jitter in high-speed systems, their causes and their effects, and methods of reducing jitter. This application note will concentrate on jitter in PLL-based frequency synthesizers.

西门子plc与上位机通信的源码程序，详细的说明西门子ppi通信协议的应用-Siemens plc Communication between PC and the source program, detailed description of the application of communication protocol Siemens ppi