In this pocket dictionary for general readers, Downing (business and economics, Seattle Pacific U.) et al. define about 3,200 terms related to computers and the Internet, from Internet culture, to computer ethics and security, to digital music, to computer architecture. Included are computer science principles and programming information, with examples in several computer languages, and a visual dictionary of characters and symbols, country codes for top-level domains, and Internet safety tips. This edition has new information on Windows 7 and 8, the iPhone and iPad, Twitter, Facebook, cloud computing, digital photography and audio, Linux, mobile devices, and recent developments. Annotation ©2013 Book News, Inc., Portland, OR (booknews.com).