What is computer in 1940s?

In the 1940s, computers as we know them today did not exist. During this era, computing machines were built and programmed using mechanical or electromechanical components rather than electronic or digital means. These machines were large, expensive, and time-consuming to build and operate. One of the most notable computers of the 1940s was the Harvard Mark I, an electro-mechanical machine that could perform basic mathematical calculations. Another important computer of this era was the Colossus, a machine designed to crack enemy codes during World War II. It was one of the first programmable electronic computers and was used to help decode messages sent between German forces. As technology advanced, computers became smaller, faster, and more powerful, leading to the development of modern digital computers in the 1950s.