| 摘要 |
<P>PROBLEM TO BE SOLVED: To heighten calculation accuracy as compared to before. <P>SOLUTION: In a graph function electronic calculator 1A, a decimal arithmetic unit 70 performs calculation of a calculation expression inputted through an input part 30 by calculation digit numbers n, n+m. When upper component values from a topmost digit to n+1 digit among an addition/subtraction result in the calculation digit number n+m become zero about addition/subtraction inside the calculation expression, a CPU 20 performs correction to make an addition/subtraction result in the calculation digit number n zero. <P>COPYRIGHT: (C)2008,JPO&INPIT |
