# MBO 4506

The MBO 4506 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 20 keys, and a VFD (vacuum fluorescent) display. The power source is 4xAA.

## Facts at a glance:

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

Type | Arithmetic |

Functions | 5 |

Keys | 20 |

Precision | 8 |

Logic | Algebraic |

Display type | VFD |

Power Source | 4xAA |

Year introduced | 1973 |

## Replacements:

If you have a MBO 4506 that is no longer working, you can first try replacing the 4xAA 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: