It is known as Antikythera Mechanism, and is believed to be world’s oldest computer which has been described as astronomical calculator as well as the world’s first analogue computer.
World’s First Computer – Antikythera Mechanism – Ancient Greek Computer
![Worlds-First-Computer-Antikythera-Mechanism-Ancient-Greek-Computer World's First Computer - Antikythera Mechanism - Ancient Greek Computer](https://2il.org/wp-content/uploads/2021/06/Worlds-First-Computer-Antikythera-Mechanism-Ancient-Greek-Computer-150x150.jpg)