# Enterprex M-90

The Enterprex M-90 is an arithmetic calculator with algebraic logic. It has 5 functions, and a VFD (vacuum fluorescent) display. The power source is 2xAA.

## Facts at a glance:

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

Type | Arithmetic |

Functions | 5 |

Logic | Algebraic |

Display type | VFD |

Length | 127mm |

Width | 70mm |

Power Source | 2xAA |

Year introduced | 1975 |

## Replacements:

If you have an Enterprex M-90 that is no longer working, you can first try replacing the 2xAA 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: