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    The popular and affordable Elektronika S3-33 was released in 1978 to replace the poorly-received Elektronika S3-27 (not in the collection).

    A simple arithmetic calculator, the S3-33 could perform the four arithmetic operations, percentages, square roots, and memory-related processes. The S3-33 was also the first Soviet pocket calculator capable of changing number signs, calculating percentages, swapping register contents, and supporting a stand-alone memory register.

    The calculator ran on three D-0.125 rechargeable batteries or a BP2-3S line adapter.

    The S3-33 was re-branded as the Elektronika MK-33 in 1982.

    Weight: 0.08 kg (exc. batteries)

    Dimensions: 131×70×14 mm