| 摘要 |
PURPOSE:To input accurately and quickly a numeral, by arranging input keys ''5'' laterally at the uppermost part at each digit like an abacus and then arranging input keys as 1, 2, 3, 4. CONSTITUTION:In inputting an integer (e.g., 750480), a numeral key a<3> of ''5'' and a numeral key c<3> of ''2'' are depressed by an index finger and a thumb respectively at the same time for the 6th digit ''7''. An adder 2<3> adds the numerals as the sum of the numerals of the a<3>, c<3> and inputted to a calculating circuit 3 as the numeral ''7'' and the numeral ''7'' is displayed on a display board g<3>. The numeral of the 5th digit is inputted similarly. The numeral ''0'' of the 4th digit is skipped without depressing any key. The numerals of the other digits are operated similarly. In depressing any operating key f<1>... at the right side finally, the inputted numeral ''75048'' is calculated (e.g., added). |
