Question

Who was the developer of Electro-Mechanical Calculating device?​

Answer 1

The developer of Electro-Mechanical Calculating device is Blaise Pascal.

Step-by-step explanation:

Blaise Pascal invented a mechanical calculator with a sophisticated carry mechanism in 1642. After three years of effort and 50 prototypes he introduced his calculator to the public.

Answer 2

Blaise Pascal

Step-by-step explanation:

In 1642, Blaise Pascal devised what was probably the first simple adding machine using geared wheels. In 1671 an improved mechanism for performing multiplication by the process of repeated addition was designed by Gottfried W. von Leibniz.