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Integer arithmetic is not closed under division. This means that when dividing one integer by another integer, the result is not always an integer. For instance, 7 divided by 2 is not a whole number but 3.5. [73] One way to ensure that the result is an integer is to round the result to a whole number.
The first of three programs written for the machine found the highest proper divisor of 2 18 (262,144), a calculation that was known would take a long time to run—and so prove the computer's reliability—by testing every integer from 2 18 − 1 downwards, as division was implemented by repeated subtraction of the divisor.
Many easily stated number problems have solutions that require sophisticated methods, often from across mathematics. A prominent example is Fermat's Last Theorem . This conjecture was stated in 1637 by Pierre de Fermat, but it was proved only in 1994 by Andrew Wiles , who used tools including scheme theory from algebraic geometry , category ...
[11] [12] In a sectionalized mast, insulators in the vertical support members divide the mast into two vertically stacked conductive sections, which are fed in phase by separate feedlines. This increases the proportion of power radiated in horizontal directions and allows the mast to be taller than 0.625 λ {\displaystyle \lambda } without ...
The median land area used by US nuclear power stations per 1 GW installed capacity is 1.3 square miles (3.4 km 2). [356] [357] To generate the same amount of electricity annually (taking into account capacity factors) from solar PV would require about 60 square miles (160 km 2), and from a wind farm about 310 square miles (800 km 2).
Windows 7 Professional and up support up to 2 physical processors (CPU sockets), [131] whereas Windows 7 Starter, Home Basic, and Home Premium editions support only 1. [132] Physical processors with either multiple cores, or hyper-threading, or both, implement more than one logical processor per physical processor. The x86 editions of Windows 7 ...
In 2012, Nokia announced and released the Nokia 808 PureView, featuring a 41-megapixel 1/1.2-inch sensor and a high-resolution f/2.4 Zeiss all-aspherical one-group lens. The high resolution enables four times of lossless digital zoom at 1080p and six times at 720p resolution, using image sensor cropping . [ 103 ]
Windows is a product line of proprietary graphical operating systems developed and marketed by Microsoft.It is grouped into families and subfamilies that cater to particular sectors of the computing industry – Windows (unqualified) for a consumer or corporate workstation, Windows Server for a server and Windows IoT for an embedded system.