Liquid crystal display in the WinXP system

Click "Start" → "Run", enter "command" (Windows 9x/me operating system) or "cmd" (Windows

NT/2000/XP operating system, you will open the Command Prompt window, enter "Debug" and return, and the "?" will appear. or "-" to indicate that you are running the debug program, press "Alt+enter" to

Maximize the window so that we can do a full screen test, and then directly enter

"F b800:00 f9f 20 70" full screen white,

"F b800:00 f9f 20 40" full screen red,

"F b800:00 f9f 20 20" full Screen green,

"F b800:00 f9f 20 10" full screen blue.

To make it easier for us to view, you can also add a grid to the full screen color,

"F b800:00 f9f C5 C4 07" Full Screen white mesh,

"F b800:00 f9f C5 C4 04" Full Screen red grid,

"F b800:00 f9f C5 C4 02" Full Screen green grid,

"F b800:00 f9f C5 C4 01" Full Screen blue grid.