一些实用的VHDL源码，有各种信号调制的，还有LCD控制的，出租车计价器等等源码。-some practical VHDL source code, a variety of signal modulation, there is the LCD control. taximeters, etc. source.

液晶模块输出VHDL程序 程序实现的功能是标准的16×2字符型液晶模块上显示字符串-LCD module output VHDL procedures to achieve the function of the procedure is a standard 16 × 2 character LCD module to display the string

利用FPGA设计一个直接数字频率合成器（DDS），要求能够通过键盘设定输出正弦波、三角波和方波，输出波形频率由键盘输入设定，液晶显示屏显示输出波形类型和频率，输出频率范围10Hz-20kHz，步长0.5Hz。-FPGA design using a direct digital synthesizer (DDS), requires the ability to set the keyboard output sine wave, triangle wave and square wave ou

VHDL程序包括IIC和PS2，LCD，USB-VHDL program includes IIC and PS2, the LCD, USB, etc.