| 摘要 |
A calculator, including working registers and one or more accumulating registers, is provided with a keyboard including numerical keys, function keys and a connecting key. The connecting key, when operated, connects a selected accumulating register with a predetermined working register controlled by the function keys. The number contained in the selected accumulating register is thereby designated as an operand in the performance of a function selected by the simultaneous or subsequent operation of a function key.
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