Marc, you won't need the converter for your computer since it can take up to 240 volts. But you would need an adapter so you can plug it in to the local power outlet.

Check your camera battery charger too. I think most of those can take 240 as well.

A converter or transformer takes the voltage down from 220/240 to 110/120. A converter is necessary if whatever you're plugging in is only the US standard of 110/120 volts. An adapter is something you use so that your US type plug can fit into a foreign power outlet. Tom.