Elektronika MK-61
[Image:Elektronika MK-61.jpg|thumb|Elektronika MK-61]
The Elektronika MK-61 is a third-generation non-BASIC, RPN programmable calculator which was manufactured in the Soviet Union during the years 1983 to 1994. Its original selling price was 85 rubles.
The MK-61 has 105 steps of volatile program memory and 15 memory registers. It functions using either three AA-size battery cells or a wall plug. It has a ten-digit green vacuum fluorescent display.
Emulator
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