测频率输出一个信号接受后转换为数字信号在液晶屏上显示出来-Measuring the frequency of the output of a signal received is converted to a digital signal on the LCD screen display

Proteus LED Simulation

Example LCD electrical schematic

The 4.3" Ultra-high Resolution LCD Touch Panel Development Kit provides users a 800x480 full-color high-quality LCD Touch Panel with complete reference designs and source code allowing users to develop applications by a touch panel on the Altera