说明：  EDA技术与VHDL 实用电路设计 步进电机和直流电机控制，VGA显示控制器设计，存储示波器设计，通用异步收发器设计，频率相位计设计，DDS设计，
(EDA technology and VHDL practical circuit design stepper motors and DC motor control, VGA display controller design, storage oscilloscope design, universal asynchronous receiver design, frequency, phase meter design, DDS design,)