Lens Drive System: Used in autofocus slr cameras. One type has a motor located inside the lens: in another, a motor inside the camera body turns the lens via a drive shaft.

 

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Lens Drive System: Used in autofocus slr cameras. One type has a motor located inside the lens: in another, a motor inside the camera body turns the lens via a drive shaft.

NT File System (NTFS): One of the file system for the Windows NT operating system (Windows NT also supports the FAT file system). NTFS has features to improve reliability, such as transaction logs to help recover . . . View Full Definition

North American Industry Classification System (NAICS): Standard industrial classification codes have been replaced in the 1997 Census of Agriculture by the new North American Industry Classification System (NAICS). NAICS is a unique, all-new sys . . . View Full Definition

Normal Lens: A type of focal length that seems to most closely approximate the human eye's range of vision (in actuality the range of vision is narrower in a normal focal length lens, with less illusion . . . View Full Definition

Open Circulatory System: A system in which the circulating fluid is not enclosed in vessels at all times; found in insects, crayfish, some mollusks, and other invertebrates.

Open System: A system that can be adjusted for new functions or purposes, and hence produce new and unpredicted results. Human language is an example of an open system. To a lesser extent, so is XML code . . . View Full Definition

Organ Systems: Groups of organs that perform related functions.

Operating System (OS): The most important program that runs on a computer. Every general-purpose computer must have an operating system to run other programs. Operating systems perform basic tasks, such as recogni . . . View Full Definition

Open Systems Interconnection (OSI): A reference model developed by the International Organization of Standardization. It splits networking into seven layers which provide specific services and communications standards.

Nonsystematic Risk: Nonsystematic risk results from unpredictable factors, such as poor management decisions, successful competitive products, or suddenly obsolete technologies that may affect the securities is . . . View Full Definition