I want to control an LED display board (I think it's called 7 segment, not too sure though). It has four 'lines' - each line has 7 rows of LEDs and displays, I think, 40 characters (something like that). There's already software on the computer that does a good job, but I want to write my own for better functionality (NB: this is not for profit - I believe in freeware, and want to write this for my church).
Could anyone please help me out on how to do this? I know you probably need more detail on the microcontroller thingys or something, but what I do know is that it's connected via the serial port. I'd like to know how to control it from a C/C++ or VB program for Windows. Help on writing to ports in Windows most welcome.