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用VHDL实现60秒倒计时的功能 倒计时为0时蜂鸣器持续响起(Continued sounded to achieve 60 seconds of the countdown function with VHDL countdown to the 0:00 buzzer)

一个解决除法溢出的例子，可以学习到很多，注释很详细(A solution to the division overflow example, you can learn a lot, very detailed notes)

n_bit_paralleLoadShiftRegJK

黑金动力原创nios ii教程，介绍了硬件、软件开发流程，提供了led、中断、串口、rtc、spi、iic、定时器等十多个实验的详细介绍(Alinx original nios ii tutorial, this paper introduces the hardware and software development process, and provides led, interrupt, a serial port, the RTC, spi, iic, timer and so on more than a dozen experiments in detail)

155B航空总线中曼彻斯特编码和译码模块，亲测可以使用，而且很好用，但是对锁相环的描述不是很仔细(155B Air bus Manchester encoding and decoding modules, pro-test can be used, and it just works)

This paper analyzes the cryptography scheme of the Trust Platform Model(TPM). The focus of the discussion would be the comparison of elliptic curve cryptography and the nowadays widely used 2048-bit RSA in evaluating which would be better suited to be used on TPM. A TPM implementation scheme based on ECC is proposed, which includes encryption and decryption schemes, signature and verification scheme, key agreement scheme. Corresponding examples of TPM commands would also be given.

节约资源型 8位*8位 运算VHDL代码，采用串行运算，8 个时钟周期完成一次运算。QUARTUS下已验证(resource conservation-8* 8 Operational VHDL code, using serial computation. 8 clock cycles to complete an operation. QUARTUS has been under test)

说明：  ADV7179芯片的驱动程序，基于FPGA硬件实现，已经验证可以使用(ADV7179 chip drivers, FPGA-based hardware implementation has been verified using)

REEDSOLOMON source code

verilog编写的DAC2902程序，用于高速的数模转换(verilog language,using for DAC2902 digital analog converter)