The LCD screen is an optional add-on for the SuperDroid Trekker. The LCD provides a great method for debugging programs and displaying pertinent run time information. The LCD is a 2 line x 16 character LCD. The LCD easily interfaces with the OOPic and plugs directly into the OOPic Expansion Board with a 3-pin ribbon cable that plugs into the OOPic-R or use a 5 pin ribbon cable to plug into the the OOPic II Expansion Board. Select the desired cable below as an option.