编码方式为213的Viterbi卷积码编码器和译码器的FPGA的实现，包含整个QuartusＩＩ的工程文件，解码方式为寄存器交换法-Encoding for the 213 convolutional code encoder and Viterbi decoder FPGA realization of the project file that contains the entire QuartusII, decoding method for the register exchange

基于Quartus9开发的一个hdb3编码，译码的仿真程序，顶层用原理图，各个模块用VHDL语言编写！-Based on the development of a hdb3 Quartus9 coding, decoding simulation program, with top-level schematic, each module is written in VHDL language!

VHDL代码，一些课本的小程序。包含3线-8线译码器，4选1选择器，6层电梯，8线-3线编码器，8线-3线优先编码器，8选1，BCD-7段显示译码器真值表，半加器，摩尔状态机，数字频率计，数字时钟，同步计数器，序列检测器的设计，序列信号发生器，一般状态机等等。(The small program of some textbooks. Includes 3 -8 decoder, 4 1 selector, 6 elevator, line 8 Line 8 line -3 encoder, -3