vhdl经典源代码――键盘接口设计，入门者必须掌握

H.264中二进制算术编码的硬件实现Binary arithmetic coding in H.264 hardware implementation(Binary arithmetic coding in H.264 hardware implementation)

基于fpga状态机的交通灯设计，亮灯时间自己修改，程序简单易懂。(Traffic light design based on FPGA state machine, light time self-modifying, the program is simple and easy to understand.)

6位密码锁，密码锁控制器是硬件与软件的结合。根据设计要求，决定以FPGA芯片和VHDL语言设计此电子密码锁(6 locks, the lock controller is a combination of hardware and software. According to design requirements, the decision to the FPGA chip and VHDL design electronic locks)

verilog HDL编写的浮点除法器，编译通过，可综合。压缩包包含三个文件。(verilog HDL write floating-point divider, compile, can be integrated. Archive contains three files.)

a program which divides the clock by 3

半加器

This is verilog source code for DES(Data Encryption standard) which is used in network security.

FPGA按键延时模块，产生key_value和key_flag 可直接例化调用(The key delay module of FPGA)

介绍了在数字语音通信中, 利用在系统可编程技术和复杂可编程逻辑器件CPLD, 实现了数字语音的复接和分接 对于其中的单稳态电路的数字化和数字锁相环提取位同步信号也进行了详细的设计说明。实际应用结果表明, 系统工作稳 定可靠, 设计是成功的。(Describes the digital voice communications, the use of in-system programmable technical and complex programmable logic device CPLD, to achieve the digital voice multiplexer and demultiplexer for the single steady state in which the digital circuit and digital phase locked loop extraction bit synchronization signals are also carried out a detailed design specification. The practical application results show that the system works stable and reliable design is successful.)

每次开机都将次数加1 并存储到EEPROM。这样就能直观的看到机器的使用次数 用P1口 LED做为显示，次数大于256是将溢出，按复位模拟开机 或者直接通过开关开机(Each boot will add a number of times and stored to the EEPROM. So you can visually see the frequency of use of the machine as with P1 port LED display, the number is greater than 256 will overflow, analog power or press the reset switch power directly through)