Most notable is a line of calculators, which started production in 1968. The Elektronika calculators were produced in a variety of sizes and function sets, ranging from large, bulky four-function calculators to smaller models designed for use in schools operating on a special, safer 42V standard (like the MK-SCH-2). As time progressed, Elektronika calculators were produced that supported more advanced calculations, with some of the most recent models even offering full programmability and functionality similar to today's American-designed graphing calculators.

These designs were based directly on Japanese or American calculators, and often many of the bugs from the original calculator would be found in the Elektronika version as well. Sometimes, significant errors were introduced during the design process, resulting in strange behavior during certain calculations. Elektronika calculators nevertheless had distinctive designs, legible displays, and were commonly available throughout the Soviet Union. Today, these relics can often be found on online auction sites directly from dealers in Ukraine that are willing to export them worldwide as souvenirs.