What’s the difference between an MP3 and an MP4? How is “electronic” different from “digital”? Where, and what, is the “cell” in my cell phone? High Definition: An A to Z Guide to Personal Technology provides answers to these and thousands of other questions about the technology we live with and depend on. With more than 3,000 terms, this dictionary brings together both the basic and the not-so-basic vocabularies of computers, phones, the Internet, and other information technology found in houses, offices, backpacks, and pockets. Both the non-technically minded and the tech-savvy will find the explanations and cross-references helpful, clear, and interesting. The dictionary helps to decipher in straightforward and accessible language the myriad of confusing terms associated with technology. Buyers can bone up on the technical specifications of electronic products and why they matter. With more than 500 abbreviations and acronyms, this is an indispensable reference in a world full of technological shorthand. No other book on the market puts so much information about the technology we use every day into one convenient and thorough volume.