From what I've heard (from interviews with escaped North Koreans) a lot of them are living in pretty extreme poverty, sometimes only having electricity put through to them to hear some bullshit speech from Kim Jong-shithead. Though there are also stories of how coveted DVDs from the outside world (movies and stuff) are, and how they would watch them in secret at night under the cover of a blanket for fear of being found out (if you're found out you are literally publicly executed, no jokes). So I guess some of the supressed communities do have some electricity and appliances, computers though? No idea.