A digital video recorder or personal video recorder is a device that records video in a digital format to a disk drive or other memory medium within a device....
In abstract algebra, a discrete valuation ring is a principal ideal domain with exactly one non-zero maximal ideal.This means a DVR is an integral domain R which satisfies any one of the following equivalent conditions:...
The Derwent Valley Railway may refer to:*The Derwent Valley Light Railway, a preserved railway in North Yorkshire, England.*The Derwent Valley Railway , a heritage railway in Tasmania, Australia....
The Devco Railway was a Canada railway. Devco Railway operated as an unincorporated department within the Coal Division of the Cape Breton Development Corporation, also known as DEVCO; as such there is no formally incorporated entity named "Devco Railway"....
