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When it comes to what was the first computer the answer can be quite complicated. Some would consider the Abacus, invented over 2,000 years ago, a computer. But for practical terms the first real computer that could be programmed is the Z1 invented in 1936 in Germany. It probably weighed around 200 pounds.

The ENIAC 1 computer invented by the U.S. Army in 1947 to calculate artillery fire was the worlds first computer using vacuum tubes. It cost $500,000 ($6,000,000 in todays money) to build. It contained 17,468 vacuum tubes, 70,000 resistors, 10,000 capacitors, 1,500 relays, & 6,000 manual switches. It weighed 30 tons and covered 1,800 square feet.

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11y ago
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16y ago

That was the Colossus that weigh about 30 tons

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15y ago

The first laptop computer was, arguably, the Grid Compass 1100 which weighed slightly over 5kg.

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Q: What was the weight of the computer in 1943?
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