Abacus
- The first Chinese abacus was invented around 500 B.C. However, in early 1962 Tim Cranmer created a new abacus for blind people. Moreover, the first mention of the Abacus dates back to the Phoenician era .
- Its invention reduced the amount of time necessary to perform complex mathematical operations, making it an invaluable tool for commerce, science and engineering. The abacus is also known as a "counting frame" .
- It's an ancient ancestor of today's computers.
- Interesting Fact: The abacus is known to be the most ancient calculating device. Moreover, merchants, traders, and clerks still use Abaci today in Eastern Europe and more.