POSEIDON Any computer that forms part of a control system-whether completely automatic or partly human-must work at the same speed as the control system. It must perform its calculations or data processing fast enough for the results to be available at the required instants in the action of the control system. This known as working in "real time." CACM March, 1962 Wheeling, R. F. CA620315 JB March 20, 1978 2:51 PM 617 5 617 617 5 617 617 5 617