| 摘要 |
PURPOSE:To automatically set reducing ratio just by inputting data for setting the reducing ratio by using a conventional input means (ten keys) without specially preparing a computer, etc., to calculate the reducing ratio. CONSTITUTION:An input means 1 for inputting the data for setting the reducing ratio, an arithmetic means 2 calculating the reducing ratio by performing the calculation of four rules of arithmetic according to the data for setting the reducing ratio inputted from the input means 1, a copying means 3 performing copying operation in accordance with the reducing ratio calculated by the arithmetic means 2, and a display means 4 displaying the reducing ratio calculated by the arithmetic means 2 are provided. When the data for setting the reducing ratio is inputted from the input means 1, the calculation of four rules of arithmetic is performed in the arithmetic means 2 according to the data so as to obtain the reducing ratio. The reducing ratio is displayed by the display means 4 and the copying operation is performed by the copying means 3 in accordance with the reducing ratio. |
