基于FPGA的步进电机控制 包括LCD控制，步进电机原理与控制，并附有代码-verilog。-FPGA-based stepper motor control, including LCD control, stepper motor theory and control, together with code-verilog.

8位加减器，八位减法器与加法器，用过一个控制端可以自由变换，采用移位加法方式，用途广泛，利用减法位补码加法的理论实现。-8 addition and subtraction, eight subtractor and adder, used a control terminal can freely change the using Shift addition, a wide range of uses, the use of subtraction complement addition t

这是FPGA控制VGA的一篇文章，包括原理及心得，代码也是用Verilog写的。-This is the FPGA to control VGA article, including the theory and experience, the code is using Verilog.