Computer illiteracy, like the original sort, comes in two basic varieties: Complete and functional.

Complete computer illiteracy is the condition of being totally unable to work a computer. A complete computer illiterate can't even turn a computer on. They also don't know what the various disk drives are for, how to work a mouse (or, in all likelihood, what the mouse even is), or how a keyboard works (one would think that older computer illiterates would at least recognize a typewriter...).

Functional computer illiteracy is the more annoying variety of computer illiteracy. These people can boot up Word and type stuff in, surf the Web after a fashion, and play simple computer games; unfortunately, though they can do these things, they barely know any of the terminology associated with computers and none of the technicalities. Several nodes about functional computer iliterates exist, including Is the Internet down?, The computer is NOT a check machine!, and the stupid thingy button isn't working.