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23 rubles




3 x AA

Elektronika MK-57b

MK-57b(c) Sergei Frolov
backplate(c) Sergei Frolov
Backplate


The fluorescent display tube is similar to that on the B3-36 and MK-61 (that is, 8+2 digit display). This calculator, however, does not use the right two digits! Most likely, at the factory there were many such indicators, and they have decided to manufacture the calculator with the indicator, which was available to them in quantity.

Like old B3-26, this calculator has bug: sqrt(-n) = -n.


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