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Ch 8-Digital Devices & Media: Managing a Digital Lifestyle
N/A
28
Computer Science
Undergraduate 1
08/13/2015

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Cards

Term
Analog
Definition
Waves that illustrate the loudness of a sound or the brightness of the colors in an image at a given moment in time.
Term
Analog-to-Digital Converter Chip
Definition
Converts analog signals into digital signals.
Term
Base Transceiver Station
Definition
A large communications tower with antennas. Sends & receives transmitters.
Term
Bluetooth
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.
Term
Cellular (Cell) Phone
Definition
A telephone that operates over a mobile network. Cell phones can also offer internet access, text messaging, personal information management (PIM) features, & more.
Term
Codec
Definition
A rule, implemented in either software or hardware, which squeezes a given amount of audio & video information into less space.
Term
Copyleft
Definition
A simplified licensing scheme that enables copyright holders to grant certain rights to a work while retaining their rights.
Term
Data Plan
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.
Term
Digital Convergence
Definition
The use of a single device to handle media, Internet, entertainment, & telephony needs; expressed in a range of devices now on the market.
Term
Digital Rights Management (DRM)
Definition
A system of access control that allows only limited use of material that has been legally purchased.
Term
Digital Signal Processor
Definition
A specialized chip that processes digital information & transmits signals very quickly.
Term
Electronic Ink (E-Ink)
Definition
A very crisp, sharp grayscale representation of text achieved by using millions of microcapsules with white & black particles in a clear fluid.
Term
Electronic Text (e-text)
Definition
Textual information stored as digital information so that it can be stored, manipulated, & transmitted by electronic devices.
Term
E-Reader
Definition
A device that can display books & that has supporting tools, like note taking, bookmarks, & integrated dictionaries.
Term
Feature Phone
Definition
Inexpensive cell phones with modest processors, simple interfaces, & often, no touch screens.
Term
Global Positioning System (GPS)
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.
Term
High Definition
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.
Term
Mobile Switching Center
Definition
A central location that receives cell phone requests for service from a base station.
Term
Multimedia Message Service (MMS)
Definition
A method of transmitting graphics, video clips, & sound files over wireless networks, most commonly between mobile phones.
Term
Peer-to-Peer (P2P) Sharing
Definition
The process of users transferring files between computers.
Term
Resolution
Definition
The clearness or sharpness of an image, which is controlled by the number of pixels displayed on the screen.
Term
Sampling Rate
Definition
The number of times per second a signal is measured & converted to a digital value. Sampling rates are measured in kilobits per second.
Term
Short Message Service (SMS)
Definition
Technology that enables short text messages (up to 160 characters) to be sent over mobile networks.
Term
Synchronizing (or syncing)
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.
Term
Telephony
Definition
The use of equipment to provide voice communications over a distance.
Term
Tethering
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.
Term
Voice over Internet Protocol (VoIP)
Definition
A technology that facilitates making telephone calls access the Internet instead of using conventional telephone lines.
Term
Wireless Internet Service Provider (Wireless ISP)
Definition
An ISP that provides service to wireless devices such as smartphones.
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