本程序是一个用VHDL编写的数码管扫描显示控制器的设计与实现的程序，仅供学习。-This procedure is a VHDL prepared using digital tube scanning display controller design and implementation of procedures for learning.

avr单片机实现驱动数码管的计时功能，同时有protues仿真，保证程序正确-avr MCU-driven digital control of the timing function, simultaneously protues simulation, to ensure the correct procedures