Hello Mr. Ayman Abdel Rahman,

If you would get off of your dead A.. and look at the references in the article I reference you would see there is a computerized version available for this integrated circuit. The Arthur is Mr. Jeff Bachioci. He published his article "Build the message board, Circuit cellar magazine Journal 45, April 1994 pages 54-61."

I would suggest you take more time to read.

Regards,

Charles Bannister