1. The world's first computer was named ENIAC (Electronic Numerical Integrator and Computer).2. It was invented by the United States, specifically on February 14, 1946, by Dr. J. Presper Eckert and his student, John Mauchly, at the University of Pennsylvania.3. ENIAC was massive in size, measuring 50 feet in length, 30 feet in width, and occupying an area of 1,500 square feet. It weighed approximately 30 tons.4. The computer was introduced to the world in 1946 and was designed at the time to calculate artillery trajectories.