usb 和VGA接口，VHD语言编写，工程文件，可以直接用ISE打开

fpga控制led灯的闪烁，内容简单，希望对初学者有用.(fpga control led lights flashing, the content is simple, I hope useful. . .)

this the for a equiripple filter-this is the for a equiripple filter

通信系统的FSK调制程序，比较实用，包括完整的工程-FSK modulation communication system procedures, more practical, including the complete works

AD768产生锯齿波的源码，DA转化的最基本操作。(AD768 sawtooth source code, the basic operation of DA conversion.)

音乐和的设计，硬件语言描叙，书上的源代码哦(Music and design, hardware language describes, the book s source code Oh)

说明：  APPCM算法和AD/DA芯片驱动在CPLD中的实现，已在实际硬件中测试OK，quartus2环境(APPCM algorithm and AD/DA chip in the drive to achieve in the CPLD has been tested in actual hardware OK, quartus2 environment)

在ise开发环境下，建立顶层模块和子模块的层次结构，其实现的功能是一个可复位课暂停开始继续的建议秒表(In ise development environment, establish a hierarchy of top-level modules and sub-modules, and its function is to achieve a resettable class resumes proposal to suspend the stopwatch)

basic verilog for students

rda1846 + pic18f2552 usb circuit schematic.

数字电路与逻辑设计实验编程，包含多功能电子钟程序，实用，简易(Digital circuits and logic design experiments programming, including multi-function electronic clock procedures, practical, simple)