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The National Electrical Code (NEC), or NFPA 70, is a regionally adoptable standard for the safe installation of electrical wiring and equipment in the United States. It is part of the National Fire Code series published by the National Fire Protection Association (NFPA), a private trade association . [ 1 ]
The NESC contains the procedure and time schedule for revising the NESC, which are described in the back of the code book. The NESC has an interpretation committee that issues formal interpretations. The process for obtaining a formal interpretation is outlined in the front of the code book. The NESC is currently published on a 5-year cycle.
NEC-2 added two major features to the original NEC, a numerical Green's function for working with large planes, and an expansion of the ground-plane code to deal with partially lossy materials that are more realistic for antennas near the ground. With the release of NEC-2, the original became known as NEC-1.
The NEC contracts now form a suite of contracts, with NEC being the brand name for the "family" of contracts. [16] When it was first launched in 1993, it was simply the "New Engineering Contract". This specific contract has been renamed the "Engineering and Construction Contract" which is the main contract used for any construction based project.
NEC Solution Innovators, Ltd. (NECソリューションイノベータ株式会社, Enu-Ī-Shī Soryūshon Inobēta Kabushiki-gaisha), formerly NEC Soft, Ltd. (NECソフト株式会社, Enu-Ī-Shī Sofuto Kabushiki-gaisha), is a subsidiary of NEC Corp.
The NEC SX-8R processors run at 2.2 GHz for vectors and 1.1 GHz for scalar operations. The SX-8R can process double the number of vector operations per clock compared to the SX-8. The SX-8R CPU has a peak vector performance 35.2 GFLOPS (10% frequency increase and double the number of vector operations) and can address up to 256 GB of memory in ...
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The PC-8001 sold well in the educational market because NEC advertised that the PC-8001 used the industrial standard of Microsoft BASIC. [24] Kanagawa Prefectural Chigasaki Nishihama High School was the first futsu-ka school (upper secondary schools with a focus on a common course) to purchase PC-8001 computers (buying 17 units) and started ...