It's a package. Most of the parts can be used.
@lte5000 Yesterday we started with the breadboard and this
https://www.b4x.com/android/forum/threads/iot-raspberry-2-piface-outputs.60029/
We put a 7-digit segment on the board and wired it to the outputs of the RB. Today we will use the 74HC595 Chip (it's a bitshifter) to control the digit(s). It has a serial input (you can send a simple bitstream to control the digit instead of wiring every segment). Next steps: Take the 8x8 segment and play with it (we will need a bigger bitshifter for that - 16Bit).
There's a LCD display, too which works the same way ("stream" some bits and text will be shown). Take a look to the tutorials. I will post the results there.