ps/2键盘输入led显示ascii码 .稍等1s在lcd上显示输入的字符,当lcd上显示满字符时，在按下按键自动清屏，从第一行显示。-ps/2 keyboard input led display ascii code. wait 1s in lcd display input characters, when the full character lcd display, the automatic clearance in screen press the button, from the