Question for my wise and expert friends

I'm thinking about my camera and my little netbook computer and it occurs to me that their battery chargers and mains adapters are not going to be designed for American electricity, which tastes different from good old English electrics ( or something - I'm not absolutely clear on the technicalities) and may cause indigestion or not working.

Am I right? Will I need to get chargers that play nice with a 110v supply or will I be able to get by with the ones I have? How can I check?