Which was the most popular first generation computer?

The most popular first-generation computer was the ENIAC (Electronic Numerical Integrator and Computer), developed in the United States in the 1940s. It was one of the earliest electronic general-purpose computers and was used primarily for complex calculations, such as those needed for artillery trajectory tables. Although it occupied a large physical space and consumed significant power, its ability to perform calculations at unprecedented speeds marked a significant milestone in computing history.