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Convergence Combination of features ROM Read Only Memory SMS Short Message Service - used for only text messaging MMS Multimedia Message Service - used for messages that include sound, images, or video Symbian OS Operating system used by some cell phones PMP Personal (or Portable) Media Player MP3 One of the most popular compressed audio formats. Others include wav, aac, wma, and flac. MP4 A popular compressed video format. Other formats include wmv, avi, mov, qt, rm, etc. sampling rate The number of times per second the music is measured and converted to a digital value PDA Personal Digital Assistant Bluetooth Wireless connection that uses radio waves to transmit data over a short distance (30 feet) IrDA Infrared is a wireless connection that uses infrared light waves to transmit data GPS Global Positioning System -uses satelite signals to calculate latitude and longitude Express Card Adds functionality to your notebook by providing an expansion slot P2P type of network in which all computers on the network communicate directly with one another rather than relying on a server as client/server networks do. codec An abbreviation for compressor/decompressor. Software or hardware used to compress and decompress digital media. flash memory nonvolatile storage that can be electrically erased and programmed anew netbook A low-end, inexpensive laptop with a small 9 or 10 inch screen and no optical drive that is generally used for web browsing, email, and word processing by users on the go. resolution This term can describe either how many pixels a monitor can display or how fine a printer can print. synchronizing process of updating data so that the files on different systems are the same telephony encompasses the general use of equipment to provide voice communication over distances, specifically by connecting telephones to each other. ubiquitous computing Technology that is so much of the environment that people don't even notice it. (Also referred to as ubicom) VoIP Voice over Internet protocol - a phone connection through a personal computer with any type of broadband Internet connection. ISP Internet Service Provider - a company that provides Internet access. AOL and Cox are examples of ISPs HDMI a single cable, with just one plug, that carries all of the video and all of the audio information. Stands for High Definition Multimedia Interface JPEG Short for Joint Photographic Experts Group. JPEG is a compression technique for color images. Although it can reduce files sizes to about 10% of their normal size, some detail is lost in the compression. (As opposed to tiff, bmp, raw, etc) WiFi (Wireless Fidelity) A popular term for a form of wireless data communication, basically "Wireless Ethernet". 3G 3rd Generation Cell Technology EDGE Enhanced Data Rate for Global Evolution (used by AT&T and T Mobile) Analog infinitely varying signals or frequencies 4G 4th Generation Cell technology. Faster than either Wifi or 3G