这是一个比较简单的通过硬件完成的程序，实现的是通过键盘输入，然后在液晶显示器上显示的程序，内容包含了上位机代码，下位机代码，硬件原理图，PCD图~-This is a relatively simple procedure done by the hardware to realize is that through the keyboard input, and then displayed on the LCD monitor program contains a host computer