The phrase "computer nerd" refers to someone who is really interested and knowledgeable about computers, often spending a lot of time with them and enjoying learning about how they work. Full definition
There are strong parallels between a classic computer nerd and the people who will come to your store seeking employment. (petbusiness.com)
Geeky Genius: Andrew Garfield, Joseph Mazzello, Jesse Eisenberg and Patrick Mapel play computer nerds who create an incredibly successful social networking site. (npr.org)
Instead of banging your head on the desk for an hour or so (no wonder it's sloped) in a faux fit of computer nerd anger, just smash it down really hard, once. (remonline.com)