# Radio Shack EC-4002 (ALPHA-NUMERIC CALCULATOR-DIRECTORY ; statesman thin LCD)

The Radio Shack EC-4002 is an arithmetic calculator with 8 digits precision and algebraic logic. It has 30 keys, and one of the early LCD (liquid crystal) displays which incorporated a yellow filter. The power source is 3x1.5V cell. The calculator was manufactured in Japan.
**Note:** Toshiba LC-836MN MEMO NOTE 30

## Facts at a glance:

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

Type | Arithmetic |

Keys | 30 |

Precision | 8 |

Logic | Algebraic |

Display type | YLCD |

Length | 137mm |

Width | 69mm |

Thickness | 9mm |

Power Source | 3x1.5V cell |

Country | Japan |

Year introduced | 1978 |

Year discontinued | 1978 |

## Replacements:

If you have a Radio Shack EC-4002 that is no longer working, you can first try replacing the 3x1.5V 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: