Real Time 



Relative address 



(1) Pertaining to the actual time 

 during which a physical process 

 transpires. (2) Pertaining to the 

 performance of a computation during 

 the actual time that the related 

 physical process transpires in order 

 that results of the computation can be 

 used in guiding the physical process. 



Identifies a word in a subroutine or 

 array with respect to its position. 

 Relative addresses are translated 

 into absolute addresses by the 

 addition of some specific reference 

 address, usually that at which the 

 first word of the routine or array 

 is stored. 



Rhumb line 



Round off 



A line of the surface of the earth 

 making the same angle with all 

 meridians; a loxodrome or loxodromic 

 curve spiraling toward the poles in a 

 constant true direction. Parallels 

 and meridians, which also maintain 

 constant true directions, may be 

 considered special cases of the rhumb 

 line. A rhumb line is a straight line 

 on a Mercator projection. Also called 

 equiangular spiral; loxodrome, loxo- 

 dromic curve; Mercator track. 



To delete the least significant digit 

 or digits of a numeral and to adjust 

 the part retained in accordance with 

 some rule. 



Routine 



Selection overlay 



Storage 



A set of instructions arranged in 

 proper sequence to cause a computer to 

 perform a desired task. 



A tracing of selected map source 

 detail compiled on transparent 

 material; usually described by the 

 name of the features or details 

 depicted, such as contour overlay, 

 vegetation overlay. Also called lift; 

 pull up; trace. 



(1) Pertaining to a device into which 

 data can be entered, in which it can 



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