help !! 7segment rolling display using pc

hi i need source code for this project i just found it schematics. it is so important for me.
i want to show the time of computer on seven segment with parallel port.

thanks

You might want to start by telling what platform you're programming for. How you access the pins depend on the microcontroller you're using. Each pin and port will usually have a macro defined that you can use to access them.