Electronic calculator for carrying out simultaneous calculations in two units of the same magnitude, has form of two page book each page having same type of keyboard and screen and resisters but different conversion functions

摘要

Calculator for conversion of a unit (u1) into a unit (u2) and vice versa. The calculator has a face (A) displaying one unit and a face (B) displaying the other unit. Both faces contain identical keyboard and screen, with the exception of a conversion function (U1) for face (A) and (U2) for face (B). The faces contain input/output registers (X1) face (A) and (X2) face (B). The registers are connected so that they are open independently from each others keyboards with the exception for the keyboard functions (U1, U2). The function (U1) has for effect to recopy into the register (X2) on face (B) the contents of register (X1) on face (A). The function (U2) recopies into the register (X1) the contents of the register (X2) with multiplication by an inverse function (1 / k). The calculator is in the form of a two page book.