# Helec GT 537 (tip-in)

The Helec GT 537 is an arithmetic calculator with algebraic logic. It has 5 functions, 19 keys, and an LED (light-emitting diode) display, typical of calculators of this era. The power source is 5xAA.

## Facts at a glance:

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

Type | Arithmetic |

Functions | 5 |

Keys | 19 |

Logic | Algebraic |

Display type | LED |

Power Source | 5xAA |

Year introduced | 1974 |

## Replacements:

If you have a Helec GT 537 that is no longer working, you can first try replacing the 5xAA 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: