But what happens when you connect the VCC common anode of the board to one of the free digital pins of the Arduino? Setting the common anode digital pin to HIGH, we power on the entire display board ...

Recently, we published an entry-level Arduino project with a single seven-segment LED display ... Each segment in the display module is multiplexed, meaning it shares the same anode connection points.

Essentially an Arduino with Ethernet networking on-board, the Nanode is armed with an ATMega 328 microcontroller along with all the other standard goodies you would expect from an Arduino ...