软I2C

用FPGA单片机软核实现键盘扫描，键盘为4X4矩阵键盘，输入相应键值，用数码管显示-keyboard

这是一个VHDL项目，用于在VIRTEX-4 xc4vsx35 FPGA板中执行接收信号的14位ADC。

1 前大灯可以随意打开和关闭； 2 当汽车左转弯的时候，前左转向灯闪烁，同时左后灯的3盏灯由右往左闪烁； 3 当汽车有转弯的时候，前右转向灯闪烁，同时右后灯的3盏灯有左往右闪烁； 4 当汽车减速或紧急刹车的时候，左后灯和右后等同时闪烁； 5 当汽车在左转弯的同时减速，则前左转向灯闪烁，左后灯的3盏灯由右往左闪烁，同时右后灯都点亮。 6 当汽车在左转弯的同时减速，则前右转向灯闪烁，右后灯的3盏灯有左往右闪烁，同时左后灯都点亮。 -a former headlamps can be opened and closed at will; 2 when the vehicle made a left turn when the former left to lights flickered. Left lights while the three lights flashing from right-go left; 3 when the vehicle is making a turn when a right turn to the former lights flickered. Right after the lights while the three lights are blinking right and left; 4 when the vehicle deceleration or when the emergency brake, Left and right after the lights blink, and so on; 5 when the vehicle made a left turn at the same time to slow down, and then to the left before the lights flickered. Left lights three lights flashing from right-go left, right after the lights are lit. 6 when a car made a left turn at the same time to slow down, and then right before the lights to flick

vhdl,双向移位寄存器，实现置数，左移及右移操作-vhdl, bi-directional shift register to achieve set the number of left and right shift operation

SRAM 读写实验，SRAM存储器的读写操作，Verilog源码有助于提高代码coding能力。使用例程。(SRAM write and read)

说明：  此代码是由FPGA产生SPWM波的代码，简单易懂(use FPGA to generate SPWM)

最新热血江湖外挂，需要的可以下载，游戏开心热血江湖应用辅助(Yulgang latest plug-in needed to download, games happy))

说明：  基于fpga的verilog实现ad及uart，并进行仿真验证(Verilog based on FPGA implements AD and uart, and carries out simulation verification)

模拟示波器的现实程序，有x，y和光标。采用AD5440输出，现实效果很好。（示波器x-y方式）(Analog oscilloscope reality program, there are x, y and cursor. Using AD5440 output, real good results. (Xy oscilloscope mode))

本文件夹包含了16个VHDL 编程实例，仅供读者编程时学习参考。 一、四位可预置75MHz -BCD码（加减）计数显示器（ADD-SUB）。 二、指示灯循环显示器（LED-CIRCLE) 三、七人表决器vote7 四、格雷码变换器graytobin 五、1位BCD码加法器bcdadder 六、四位全加器adder4 七、英语字母显示电路 alpher 八、74LS160计数器74ls160 九、可变步长加减计数器 multicoun