一个4×4矩阵键盘接口程序的Verilog设计（FPGA）

使用Altera公司的FPGA进行VHDL开发。使用quartus2 9.0软件在EP1C3T144C8开发板上实现对一个十字路口的交通灯的控制，包括4个红绿灯和4个2位的数码倒计时器。-The use of Altera" s FPGA-VHDL development. Use quartus2 9.0 software EP1C3T144C8 development board to realize a crossroads traffic lights control, including four traffic lights, and four 2-bit digital countdown device.

波形产生器：用VHDL编写的波形产生器程序-Waveform Generator: Using VHDL prepared waveform generator procedure

FPGA数码管显示秒表实验 三种方法实现： 方法一： 对秒计数，得到（秒显示）0~9， 对（秒显示）计数，得到（分秒显示）0~5， 对（分秒显示）计数，得到（分钟显示）0~5， 注意进位时机 方法二： 对秒计数，得到（秒显示）0~9 对秒计数，得到（分秒显示）0~5 对秒计数，得到（分钟显示）0~5 方法三： 只对秒计数，分别取模 %60得到分钟显示 ************************ 余数%10得到分秒显示 （据说）取模运算占资源！！！！（也能接受？好像...） 再剩下的余数为秒显示 ************************(Experiment of Digital Tube Display Stopwatch Based on FPGA Three ways to achieve)

说明：  16位右移位寄存器 下面描述的是一个位宽为16位的右移位寄存器，实际具有环形移位的功能，是在右移位寄存器的基础上将最低位的输出端接到最高位的输入端构成的。其功能为当时钟上升沿到达时，输入信号的最低位移位到最高位，其余各位依次向右移动一位。(16-bit right shift register The following description is a right shift register with a bit width of 16 bits. It actually has the function of circular shift. It is based on the right shift register, which connects the lowest bit output terminal to the highest bit input terminal. Its function is that when the rising edge of the clock arrives, the lowest displacement of the input signal reaches the highest position, and the rest of you move one bit to the right in turn.)

FPGA编程，经过团体奋战完成，全是底层的IIc和sci通信，完整版。(FPGA programming, after groups fight to the finish, all underlying SCI and IIc communication, full version)

这个是用VHDL实现FPGA对FLASH的读写。(This is achieved using VHDL FLASH FPGA to read and write.)

使用PWM控制LED亮度的单片机C代码，共计十个亮度。(PWM control of LED brightness microcontroller C code, for a total of ten brightness.)

浮点数 矩阵乘法模块 verilog语言编写 可直接调用(Floating-point matrix multiplication module can directly call verilog language)

用Verilog语言实现的FPGA UART独立收发模块 思路简单，代码简洁。在Lattice LFE3EA VERSA开发板上验证通过,编译器Lattice Diamond. 功能：串口收到数据后立即回传，此后每一秒串口数据+1再发送。(Using Verilog language independent of FPGA UART transceiver idea is simple, concise code. Development board in Lattice LFE3EA VERSA verified by the compiler Lattice Diamond. Features: Serial data is received immediately after the return, then every second serial port and then send the data+ 1.)

dual port ram control (dual port ram control dual port ram control dual port ram control)