Difference between a DFRduino Duemilanove and a DFRduino Romeo

Hello pros, I'm a quite noob and I get two arduino boards from my teacher, but I think Romeo will be enough to control a robot, what is the Duemilanove used for?

Thanks.

Well ask your teacher... The Romeo is just an Arduino with an H-bridge, some buttons and extra headers added, so why another Arduino only your teacher knows.

Senso: Well ask your teacher... The Romeo is just an Arduino with an H-bridge, some buttons and extra headers added, so why another Arduino only your teacher knows.

Thanks, then could you tell me which will be more suitable to control a robot?

The Romeo because at least the H bridge to controll the motors is already mounted in the board and its just a mater of connecting the motors and the power supply.