Displaying a bus value (address and/or data) is nice, but I have been suggested other uses, such as time display (think: clock) or multimeter display (volts, amperes, ohms, whatever). What else would you do with a DYPLED module ?

Edit (20160413)

The #SPDT16: 16-bits arithmetic unit with relays would need 3 or 4 #DYPLED

It would also be used in the #Quick & Dirty Frequency Generator to show the division factor and/or the actual frequency...