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| Dec 2, 2009 |
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Hardware >
Electronic Components >
Integrated Circuits >
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ALSO CALLED:
Semiconductor Devices,
Digital Semiconductors,
Computer Chips,
Chips
DEFINITION: A semiconductor is a substance, usually a solid chemical elementor compound, that can conduct electricity under some conditions but not others, making it a good medium for the control of electrical current. Its conductancevaries depending on the current or voltage applied to a control electrode, or on the intensity ofirradiation by infrared (IR), visible light, ultraviolet (UV), or X rays.The specific
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Definition continues below.
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Semiconductors Multimedia
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Reduce Your CPU Cost by Tuning Your SQL
sponsored by Compuware Corporation
WEBCAST:
The process of SQL "tuning" involves finding the absolute fastest route to answer your query. In this webcast, discover how SQL tuning brings down your CPU costs and lowers response and run times. Also find out answers to pressing SQL tuning questions including "how do you find the SQL to tune" and "which SQL must be tuned and why?"
Posted: 11 Nov 2009 | Premiered: 11 Nov 2009
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Secure Your Future Now: Run Your Business Critical SAP Workloads with Greater Confidence, Less Uncertainty and Lower Costs
sponsored by Microsoft, Intel and HP
WEBCAST:
This webcast explores the benefits of migrating SAP workloads from SPARC to an integrated platform. Discover how this transition can enable your organization to increase their flexibility, scalability and reliability.
Posted: 02 Dec 2009 | Premiered: 02 Dec 2009
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SEMICONDUCTORS DEFINITION (continued): … properties of a semiconductor depend on theimpurities, or dopants, added to it. An N-type semiconductor carries current mainly in the form ofnegatively-charged electrons,in a manner similar to the conduction of current in a wire. A P-typesemiconductor carries current predominantly as electron deficiencies called holes. A hole has a positive electric charge, equal and opposite to the charge on an electron. Ina semiconductor material, the flow of holes occurs in a direction oppositeto the flow of electrons.Elemental semiconductors include antimony, arsenic, boron, carbon,germanium, selenium, … Semiconductors definition sponsored by SearchCIO-Midmarket.com, powered by WhatIs.com an online computer dictionary
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