- Arduino Uno is the latest version of Arduino Duemilanove. There are more of similarities between the two so that with no questions a Arduino Uno can be used in place of Arduino Duemilanove. The few slight differences can be listed as follows.
| Arduino Uno | Arduino Duemilanove |
 |
 |
| The new version Board | The older version Board |
| Only Supported by the latest versions of Arduino software – Eg: Arduino 0022 | Supported by new version and few olderversions of Arduino software Eg: Arduino 0017 |
| New Label | Old Label |
| USB-to-serial chip the ATMega8U2 | USB-to-serial chip the FT232R |
| Comparatively labels are clear | Small labeling in size |
