| 摘要 |
PROBLEM TO BE SOLVED: To provide a novel electronic equipment easy in key operation, and causing little erroneous operation. SOLUTION: For attaining the purpose, this electronic equipment is provided with numeric value input keys of at least 0 to 9, a display device arranged on the upper side of these numeric value input keys, and displaying a numeric value inputted by the numeric value input keys, and function input keys such as×,÷, +, -, = for executing at least a four-rule arithmetic operation by using the numeric value inputted by the numeric value input keys. Among the function input keys, the function input keys of + and = are arranged in parallel on the lower side of the numeric value input keys, and the other function input keys are arranged on the upper side or the lateral side of the numeric value input keys. Such constitution can eliminate the erroneous operation, and can be easily used.
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