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Definition
| Waves that illustrate the loudness of a sound or the brightness of the colors in an image at a given moment in time. |
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| Analog-to-Digital Converter Chip |
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Definition
| Converts analog signals into digital signals. |
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Definition
| A large communications tower with antennas. Sends & receives transmitters. |
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Definition
| A type of wireless technology that uses radio waves to transmit over short distances (approximately 1-300 feet depending on power); often used to connect peripherals such as printers to computers or headsets to cell phones. |
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Definition
| A telephone that operates over a mobile network. Cell phones can also offer internet access, text messaging, personal information management (PIM) features, & more. |
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Definition
| A rule, implemented in either software or hardware, which squeezes a given amount of audio & video information into less space. |
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Definition
| A simplified licensing scheme that enables copyright holders to grant certain rights to a work while retaining their rights. |
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Definition
| A connectivity plan or text messaging plan in which data charges are separate from cell phone calling charges & are provided at rates different from those for voice calls. |
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Definition
| The use of a single device to handle media, Internet, entertainment, & telephony needs; expressed in a range of devices now on the market. |
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| Digital Rights Management (DRM) |
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Definition
| A system of access control that allows only limited use of material that has been legally purchased. |
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Definition
| A specialized chip that processes digital information & transmits signals very quickly. |
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Definition
| A very crisp, sharp grayscale representation of text achieved by using millions of microcapsules with white & black particles in a clear fluid. |
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Definition
| Textual information stored as digital information so that it can be stored, manipulated, & transmitted by electronic devices. |
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Definition
| A device that can display books & that has supporting tools, like note taking, bookmarks, & integrated dictionaries. |
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Definition
| Inexpensive cell phones with modest processors, simple interfaces, & often, no touch screens. |
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Term
| Global Positioning System (GPS) |
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Definition
| A system of 21 satellites (plus 3 working spares), built & operated by the U.S. military, that constantly orbit the earth. The satellites provide information to GPS-capable devices to pinpoint locations on the earth. |
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Definition
| A standard of digital TV signal that guarantees a specific level of resolution & a specific aspect ratio, which is the rectangular shape of the image. |
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Definition
| A central location that receives cell phone requests for service from a base station. |
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Term
| Multimedia Message Service (MMS) |
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Definition
| A method of transmitting graphics, video clips, & sound files over wireless networks, most commonly between mobile phones. |
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Term
| Peer-to-Peer (P2P) Sharing |
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Definition
| The process of users transferring files between computers. |
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Definition
| The clearness or sharpness of an image, which is controlled by the number of pixels displayed on the screen. |
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Definition
| The number of times per second a signal is measured & converted to a digital value. Sampling rates are measured in kilobits per second. |
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Term
| Short Message Service (SMS) |
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Definition
| Technology that enables short text messages (up to 160 characters) to be sent over mobile networks. |
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Term
| Synchronizing (or syncing) |
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Definition
| The process of updating data on portable devices (such as a cell phone or iPod) & a computer so that they contain the same data. |
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Definition
| The use of equipment to provide voice communications over a distance. |
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Definition
| Approach which makes sure that as long as you have a 3G signal, your computer can access the Internet even when it tells you there are no available wireless networks. Several smartphones offer this capability. |
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Term
| Voice over Internet Protocol (VoIP) |
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Definition
| A technology that facilitates making telephone calls access the Internet instead of using conventional telephone lines. |
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Term
| Wireless Internet Service Provider (Wireless ISP) |
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Definition
| An ISP that provides service to wireless devices such as smartphones. |
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