数字电压表的实现，VHDL语言实现，AD采用TLC549，通过学习，了解AD采集过程,The realization of digital voltage meter, VHDL language, AD using TLC549, by learning to understand the acquisition process AD

verilog TLC549AD采样程序 ，速度200K，在LED和数码管上显-verilog TLC549AD sampling procedures, the speed of 200K, in the LED and digital tube significantly