The formula manipulation system device and the numerical arithmetic expression

摘要

PROBLEM TO BE SOLVED: To confirm a formula corresponding to an input numeric value calculation expression.;SOLUTION: A function electronic calculator 1 is provided with an input part 2 for receiving an input operation of the numeric value calculation expression from a user, a display 3 for displaying the input numeric value calculation expression, an FORM key 25 for receiving a formula display operation for indicating display of the formula from the user, and a CPU 8 for displaying on the display 3 the formula having each numeric value in the numeric value calculation expression substituted with a variable.;COPYRIGHT: (C)2008,JPO&INPIT