computer circuit consisting of an electronic sub-assembly; copper conductors are laminated on an insulating board or card and circuit components are inserted into holes and dip soldered
capable of being reached only with great difficulty or not at all
not capable of being obtained; "a rare work, today almost inaccessible"; "timber is virtually unobtainable in the islands"; "untouchable resources buried deep within the earth"
the size of something as given by the distance around it
the length of the closed curve of a circle
the boundary line encompassing an area or object; "he had walked the full circumference of his land"; "a danger to all races over the whole circumference of the globe"
a line or route along which something travels or moves; "the hurricane demolished houses in its path"; "the track of an animal"; "the course of the river"