Issue No. 02 - March/April (1972 vol. 5)
Lockheed Electronics' Data Products Division has shipped the first production order of fifty MAC 16 minicomputers under a contract with lotron Corporation of Bedford, Massachusetts. The MAC 16's are components of lotron's automatic anticollision navigation system for shipboard use. Called DIGIPLOT<sup>TM</sup>, the minicomputer-controlled system, using conventional ship radar, analyzes all radar returns within 17 miles. The system automatically discriminates between small targets and the edge of land, evaluates over 200 of the closest targets, and plots the 40 "most threatening." The watch officer may preset a warning approach distance and approach time. When any target crosses these thresholds an alarm sounds and that target brightens on the display tube.
"New Applications", Computer, vol. 5, no. , pp. 62-63, March/April 1972, doi:10.1109/C-M.1972.216895