# Sinclair Executive

The Sinclair Executive is an arithmetic calculator with 8 digits precision and algebraic logic. It has 5 functions, 18 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 4x mercury cell.
**Note:** First Sinclair calculator.

## Facts at a glance:

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

Type | Arithmetic |

Functions | 5 |

Keys | 18 |

Precision | 8 |

Logic | Algebraic |

Display type | LED |

Length | 138mm |

Width | 56mm |

Thickness | 9mm |

Weight | 71g |

Power Source | 4x mercury cell |

Year introduced | 1972 |

## Replacements:

If you have a Sinclair Executive that is no longer working, you can first try replacing the 4x mercury cell 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: