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10 Cards in this Set
- Front
- Back
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Web TV
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Web television. New devices that allow television viewers to connect to the Internet for Web surfing and to send and receive electronic mail. It's among the devices sometimes called Internet appliances.
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Fiber Optics
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A technology in which light, rather than electrical energy, is used to carry data. Fiber-optic cable is made up of thin filaments of glass. It can carry large amounts of data over long distances, as much as 30,000 times the data that can be sent over conventional copper wires with electrical signals.
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Bandwidth
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The data transmission capabilities of a network. "High bandwidth" networks are capable of moving large amounts of data at once. "Low bandwidth" networks slow down when too many users try to send data at once, or if the data sent include photos, graphics and video. Such art elements usually require more bandwidth than plain text.
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Operating System
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Software that manages the basic functions of a computer. It figures out such things as how memory will be used, what tasks to do first, how to manage data flow through the processors, and how to get information to the printer. The most popular operating systems today include Windows, Unix, and Macintosh.
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Browser
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A software program that provides the graphical user interface that lets computer users peruse the Internet's World Wide Web. The leading browsers, by far, are Netscape Communications Corp.'s Navigator and Microsoft Corp.'s Internet Explorer
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Intranet
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A corporate network that uses Internet technology, such as browser programs and standards developed for the World Wide Web. Can be less costly to set up than other networks. Intranets are protected from outside access.
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Java
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A programming language created by Sun Microsystems Inc. that allows small software programs called applets to be used as they are downloaded from one computer to another. The technology works with many operating systems, from Unix to Windows. Is well-suited to the Internet, which links computers of many different types. A component called Hot Java lets World Wide Web users view live, animated graphics using applets.
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Relational Database
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Computer-based information organized so users can quickly access related information from separate files. A customer file, for example, can be linked with an order file, making it easy to find out which customers bought a certain product.
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DVD
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Digital video disc. A new standard for storing feature-length movies and other data on compact-disc-sized platters. DVD's let users play movies on a PC or TV via a DVD player. The discs hold much more information than standard CDs do.
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Megahertz
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One million cycles per second. A unit of measurement that relates to light, heat, radio waves and other vibrations. Often used to gauge a computer's raw speed, the rate at which operations proceed in its internal processing. A 150-megahertz system, for example, processes data internally twice as fast as a computer powered by a 75-megahertz microprocessor.
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