In all of Latin America you're pretty well off with the European type C two prong round pin adapters and American type A 2 standard parallel flat prong plugs (it's what you already have here in North America).
In Argentina however, you might also run across a type I (that's an uppercase i) adapter. That's the same one used in Australia. It has two flat prongs like a US plug, but they're at a 45 degree angle to parallel (sort of like this "/ \" )
In Peru, you'll only find type A and type C.
One thing though, in Latin America you may find that what you think is a standard North America type A two prong plug is wired for 220 VAC instead of 110 VAC. That shouldn't be a problem with modern power supplies (as mentioned), but if you have something that's strictly 110 only, you shouldn't plug it in, unless you like a lot of excitement!
Look at the information on the power supply to be sure (it's usually on there with really fine print). Our phone charger for example says: 100-240 V ~ 50-60 Hz 0.5 A. The amperage is of no concern, but the device is happy with anywhere from 100 to 240 Volts at 50 to 60 Hz frequency. Devices like that with the right adapter will work anywhere in the world.
If you device is 110 V only, you will need a 220 to 110 converter or transformer. Otherwise you'll damage your device.
A bit of humor: Electrical equipment really runs on magic smoke. If you let out the magic smoke - the gadget stops working! Norwega - I'll be you let out your video recorders magic smoke!