278 GlossaryFFahrenheit — A temperature measurement scale where 32° is the freezing point and212° is the boiling point of water.FBD — fully-buffered DIMM — A DIMM with DDR2 DRAM chips and anAdvanced Memory Buffer (AMB) that speeds communication between the DDR2SDRAM chips and the system.FCC — Federal Communications Commission — A U.S. agency responsible forenforcing communications-related regulations that state how much radiationcomputers and other electronic equipment can emit.fingerprint reader — A strip sensor that uses your unique fingerprint to authenticateyour user identity to help secure your computer.folder — A term used to describe space on a disk or drive where files are organized andgrouped. Files in a folder can be viewed and ordered in various ways, such asalphabetically, by date, and by size.format — The process that prepares a drive or disk for file storage. When a drive ordisk is formatted, the existing information on it is lost.FSB — front side bus — The data path and physical interface between the processorand RAM.FTP — file transfer protocol — A standard Internet protocol used to exchange filesbetween computers connected to the Internet.GG — gravity — A measurement of weight and force.GB — gigabyte — A measurement of data storage that equals 1024 MB(1,073,741,824 bytes). When used to refer to hard drive storage, the term is oftenrounded to 1,000,000,000 bytes.GHz — gigahertz — A measurement of frequency that equals one thousand millionHz, or one thousand MHz. The speeds for computer processors, buses, and interfacesare often measured in GHz.graphics mode — A video mode that can be defined as x horizontal pixels by y verticalpixels by z colors. Graphics modes can display an unlimited variety of shapes andfonts.GUI — graphical user interface — Software that interacts with the user by means ofmenus, windows, and icons. Most programs that operate on the Windows operatingsystems are GUIs.
