Which of the following is an automated calculating machine that is as large as a locomotive and powered by steam?
A) Difference engine
B) Audion
C) Crossbar switch
D) ENIAC

Question

Quizplus · Accepted Answer

The Difference Engine, conceived by Charles Babbage, is an early example of an automated calculating machine. It was designed to be powered by steam and was as large as a locomotive, although it was never completed in Babbage's lifetime.

Which of the Following Is an Automated Calculating Machine That