Computer is an Electronics Device, which can accept data from input device and get result through out put device.The word COMPUTER came from the Latin word COMPUTE.
Compute men: To Calculate.
Computer men: Calculate by which machine.
The first general-purpose electronic computer was ENIAC, short for Electronic Numerical Integrator And Computer,. Precisely, it was the first high-speed, purely electronic, digital computer.
ENIAC’s physical size was massive compared to modern PCstandards. It contained 17,468 vacuum tubes, 7,200 crystal diodes, 1,500 relays, 70,000 resistors, 10,000 capacitors and around 5 million hand-soldered joints. It weighed 30 short tons (27 t), was roughly 8.5 feet by 3 feet by 80 feet(2.6 m by 0.9 m by 26 m),took up 680 square feet (63 m²), and consumed 150 kW of power.