Hi all, New member here so please be gentle! I am a beginner in C# and want to read in a byte of serial data and display the result on a PC as a sort of led mimic panel. 1 byte would give 0 - 255. To begin I would like say 10 circles on the screen. I would like to fill these according to the contents of the byte sent, starting with 0 - 10. (0x00 - 0x0A). So an empy circle reflects off and a filled circle on. Hope that makes sense. I have found tutorials for the serial input but can anyone point me in the right direction for the graphics part? Thanks, Dave.