Dear Mr. Serdar Ozcan:

You can find an excellent article at the below web site for the information
describing the Hdsp-2112 Dot Matrix Display. It includes Software and schmatic for 8051 type CPU.

http://www.rentron.com/project04.htm

Tom, sorry to get out of order here but though I could be helpful to Mr. Ozcan.

Thank you,

Charles Bannister