Stats...
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| 12/ 1985
9/ 1991 |
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| 220V 50Hz
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Factories...
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Elektronika MK-59
 
Key  is used for rounding number by 0..9 digits after point (as "FIX" in Casio calculators).
Key  as NORM (cancel rounding number).
Calculator has 16-digits display. Comma has personal digit on display.
It is very convenient for the operator. Rounding has interesting feature. If result number will exceed your place on display, it will cause an overflow.
Example: while fixing 9 digits after comma we have number 100000.000000000
If this number is multiplied by 10, then the display will result in an overflow. This calculator has a capacitor keyboard with big keys. This keyboard is the best I have seen Soviet desktop calculators.
The Clear Memory key at first recalls stored number from the X register to the display and clears the X register.
Key "E+" is equal to two keys "=" then "P+".
- Sergei Frolov
An interesting variant. Note the keys!
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