Method of entering and performing operations on complex numbers on calculators

摘要: A data processing apparatus employs a single key stroke for defining complex number entry and designating particular calculation mode. Entry of follows the following format: first part number, mode designation command, second number. command designates numeric to be assigned also causes enter corresponding computation Thereafter, upon at least some normal operational commands apparatus, these are performed previously entered numbers in accordance with mathematical laws arithmetic. The preferably generates an indication when has been set. Display two parts is facilitated by exchange which exchanges so that other may displayed. In further preferred embodiment, stored recalled from pairs user accessible memories manner similar operations on real numbers.