We’re not sure, but the number of recognizable alphanumeric characters that a seven-segment display can manage seems to have more to do with human pattern recognition than engineering. It takes some ...

I just aquired the above message board but it has come without the programing device.<BR><BR>However it has an 9 pin serial port and I found the following pinout on a ...

The NYPD is improving its communications skills. With LED signs. New York City Police Commissioner Raymond W. Kelly on Tuesday announced that the NYPD is equipping police cars with a scrolling blue ...