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Type, Precision, Input mode | Scientific, 12 BCD digits, exponent ±99, Reverse Polish Notation |

Programmable | No |

Memory | 10 storage registers (0-9, 0 is last-X, 7 is
summation count, 8 is sum of squares, 9 sum of values), not permanent |

Display | 14 digit 7 segment green LED |

Special features | Instructions on the back, 4-level stack which
behaves like in HP calculators, unit conversions, a large number of
functions thanks to the INV and HYP keys. |

Original Pricing, Production | The Calculator Forensics indicate a Mostec chip,
see below. According to Datamath
this chip was introduced 1975 so this calculator must have been
introduced towards the end of the seventies. |

Batteries | Built-in rechargeable battery pack. External
SERD power supply or DC 6V off-the-shelf power supply (minus on center). |

Dimensions | Length 15.9cm, Width 8.6cm, Height 4.2cm |

Links | |

Comment | F DSP n selects display precision. F SCI selects exponential notation,
INV F SCI selects fix-point notation with 12 digits of precision, INV
SUM+ is equivalent to SUM-. |

Calculator forensics | 8.99999614252. This indicates a Mostek MK50075, 50103, 50104 chipset. |

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