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Dead reckoning, a process of estimating global position •
Demand response, a method of managing consumer consumption of electricity •
Design rationale, documentation of reasons behind decisions made during technical design • Designated Router, in
Open Shortest Path First protocol •
Digital radiography, a form of X-ray imaging using digital sensors •
IT disaster recovery, reestablishing systems following a disaster •
Dram (unit) (dr), a unit of mass and volume •
Dynamic range, the ratio between the largest and smallest possible values of a quantity, such as sound and light ==Other uses==