| 摘要 |
PROBLEM TO BE SOLVED: To provide an electronic desk-top calculator that is inexpensive with a structure not excessively complicated, and easily allows for a check of an input content.SOLUTION: The electronic desk-top calculator comprises: input means; arithmetic formula storage means; arithmetic processing means; process result storage means; and output means. The arithmetic processing means performs arithmetic processing, and is configured to have: arithmetic formula selection means that selects a stored arithmetic formula and a specific arithmetic processing result of performing arithmetic processing of the arithmetic formula in each input order and arithmetic processing order or in reverse order; and selection operation means. |
