| 摘要 |
A portable calculator comprising a plurality of memory transmitting units engageable with memory pins, guide plates for guiding memory transmitting units, accumulators, a carry mechanism consisting of carry members mounted on respective counter wheels, transfer members engageable with the corresponding carry members, levers pivotally supporting the transfer members and operating members for raising the rear end of the supporting members, and a credit balancing mechanism, the calculator simultaneously making different sets of calculations including addition, subtraction, subtotaling and totaling and locking the credit balancing mechanism when the balancing operation is not conducted.
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