用NiosII实现的数字钟，经过本人测试运行正常，开发环境：QuartusII6.0和NiosII IDE6.0...

In the data management system a significant role of the Data link layer is to convert the unreliable physical link between reader and tag into a reliable link. Therefore, the RFID system employs the Cyclic Redundancy Check (CRC) as an error detection scheme. In addition for reader to communicate with the multiple tags, an anti-collision technique is required. The technique is to coordinate the communication between the reader and the tags. The common deterministic anti-collision techniques are based on the Tree algorithm such as the Binary Tree and the Query Tree algorithms.

ADS7809是Burr-Brown公司推出的高精度AD采集芯片。它采用5V单电源供电,内含16位 逐次逼近寄存器,采样精度高,功耗小。 用Verilog实现其配置(ADS7809 is a Burr-Brown Introduces High Precision AD capture chip. It uses a single 5V supply, with 16-bit successive approximation register, sampling and high precision, low power consumption. To achieve its configuration with the Verilog)

说明：  基于FPGA的信号发生器，产生了正弦波，方波，锯齿波和三角波四种波形，按下一次按钮，波形切换一次。按下另一个按钮，改变波形的频率(The signal generator based on FPGA can generate four kinds of waveforms: sine wave, square wave, sawtooth wave and triangle wave. Press the button once and switch the waveform once. Press another button to change the frequency of the waveform)

说明：  一个红外遥控，可以学习其他的红外编码，并存储记忆，并且将学习到的编码发送(An infrared remote control)

完整版的乘法器.相信对初学者有不小的提高-The full version of the multiplier. I believe there is not a small improvement for beginners

一些例子程序需要的话可以下来看看新手推荐-Some examples of procedures can be down if necessary to see novice Recommended

LFSR模块，单个模块，实现移位寄存器，生成测试用pattern-LFSR

FPGA与HDMI ADV7511接口源代码(FPGA HDMI Adv7511 interface)

vhdl code for carry lookahead addder

很多实用的例程，包括触发器，译码器，多路选择器-A lot of useful routines, including the flip-flop, decoder, MUX