# Melcor 590

The Melcor 590 is an arithmetic calculator with algebraic logic. It has 4 functions, 27 keys, and a VFD (vacuum fluorescent) display. The power source is PP3 9V.
**Note:** conversions

## Facts at a glance:

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

Type | Arithmetic |

Functions | 4 |

Keys | 27 |

Logic | Algebraic |

Display type | VFD |

Length | 152mm |

Width | 76mm |

Power Source | PP3 9V |

## Replacements:

If you have a Melcor 590 that is no longer working, you can first try replacing the PP3 9V battery. 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: