# Unisonic 1040-I

The Unisonic 1040-I is an arithmetic calculator with 8 digits precision and algebraic logic. It has 8 functions, 27 keys, and a VFD (vacuum fluorescent) display. The power source is 4xAAA.

## Facts at a glance:

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

Type | Arithmetic |

Functions | 8 |

Keys | 27 |

Precision | 8 |

Logic | Algebraic |

Display type | VFD |

Length | 140mm |

Width | 83mm |

Power Source | 4xAAA |

Year introduced | 1975 |

## Replacements:

If you have a Unisonic 1040-I that is no longer working, you can first try replacing the 4xAAA 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: