用VHDL语言的七段数码显示译码器设计 已仿真出结果 用来学习7段数码显示译码器设计；学习VHDL的CASE语句应用及多层次设计方法。-VHDL language of seven-segment display decoder has been designed simulation results were used to study a 7-segment display decoder design learn VHDL CASE statement applications and