Question

Q1: Which is the popular automatic calculating machine in present (2020-2021).​

Answer 1

Explanation:

mechanical calculator, or calculating machine, is a mechanical device used to perform the basic operations of arithmetic automatically.

Answer 2

$\huge{\underline{\mathfrak{Answer:-}}}$

Pascaline

Pascaline, also called Arithmetic Machine, the first calculator or adding machine to be produced in any quantity and actually used.