When and where was the first computer invented? What are the characteristics? What's the point?

1946 ENIAC

Generally speaking

The world's first modern electronic computer "Eniac" was born in the University of Pennsylvania on February 14th, 1946, and was officially announced the next day. At the unveiling ceremony of Penn Damore Institute of Electrical Engineering, this behemoth with an area of 17 square meters and a weight of 3 tons, ENIAC is 3.48 meters long and 1 meter wide, with 3 consoles, which is about the size of 1 ordinary rooms, with a power consumption of 15 kilowatts and a cost of 48, US dollars. It contains 17,468 vacuum tubes, 7,2 crystal diodes, 1,5 relays, 7, resistors, 1, capacitors, 1,5 relays and more than 6, switches. It performs 5, additions or 4 multiplications per second, which is 1, times that of relay computers and 2, times that of manual calculation.

But it is also said that

the first electronic computer in the world is actually ABC(Atanasoff-Berry Computer), and ENIAC is the second one. Previous data claimed that the first electronic computer was called ENIAC (Chinese name: ENIAC) (short for electronic digital integrator and computer in English), and it was born in the United States on February 15th, 1946. The Moore Group, which undertook the development task, was composed of four scientists and engineers, eckert, Moakley, Goldstein and bocks. eckert, the chief engineer, was only 24 years old at that time.