<human>:  With regards to the history of technology, when was the first computer invented?
<bot>: The first computer was the ENIAC, invented by John Mauchly and J. Presper Eckert in 1946. It was a huge machine, weighing about 15 tons and consisting of 17,468 vacuum tubes. The ENIAC was used to calculate the trajectory of an intercontinental ballistic missile, and was also used to help with the Manhattan Project, which developed the atomic bomb.