sm


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Sm,

symbol for the element samariumsamarium
, metallic chemical element; symbol Sm; at. no. 62; at. wt. 150.36; m.p. 1,072°C;; b.p. 1,791°C;; sp. gr. 7.54 at 20°C;; valence +2 or +3. Samarium is a lustrous silver-white metal.
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Sm

(chemistry)
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

SM

1. Abbr. for “standard matched.”
2. Abbr. for surface measure.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

sm

(networking)
The country code for San Marino.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

singlemode fiber

An optical fiber with a core diameter of less than 10 microns. Used for high-speed transmission over long distances, it provides greater bandwidth than multimode, but its smaller core makes it more difficult to couple the light source. Increasingly, singlemode fiber is used for shorter distances. When singlemode fiber is used in shorter distances, such as a campus or metropolitan area network (MAN), step-index fiber is used. For longer distances and for transmitting multiple channels (WDM), dispersion-shifted fiber is used. Contrast with multimode fiber. See dispersion-shifted fiber, step-index fiber, dispersion and fiber optics glossary.



SmartMedia

An earlier ultra-compact flash memory format developed by Toshiba and introduced in 1995. About the size of CompactFlash and as thin as a credit card, SmartMedia cards were popular for digital camera storage for a while, but capacities never reached beyond 128MB. Available in 3.3 and 5 volt variations, SmartMedia cards required no assembly in manufacture as they were actually a chip package. See flash memory.



SmartMedia Modules
Extremely compact, SmartMedia cards were popular for a short while. They could be transferred to any computer with a Type II PC Card (PCMCIA) socket.


SmartMedia Modules
Extremely compact, SmartMedia cards were popular for a short while. They could be transferred to any computer with a Type II PC Card (PCMCIA) socket.
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