# Litronix 1720 (checkmate 1720)

The Litronix 1720 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 7 functions, 25 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 3xAA.

## Facts at a glance:

Feature | Value |
---|---|

Type | Arithmetic |

Functions | 7 |

Keys | 25 |

Precision | 8 |

Logic | Algebraic |

Display type | LED |

Length | 165mm |

Width | 81mm |

Thickness | 23mm |

Power Source | 3xAA |

Year introduced | 1975 |

## Replacements:

If you have a Litronix 1720 that is no longer working, you can first try replacing the 3xAA batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent. We suggest the following current models as possible replacements: