Most Weigh around 500 lbs.
According to me as much as I know being in 7th Class, It would be Eniac.ENIAC was a "one off" military computer custom designed for the US Army, no more were made and none were ever available commercially. The first US commercially available computer was made by Remington Rand starting in 1951, it was UNIVAC I.
The UNIVAC 1, which was the first commercially produced computer in the United States, cost around $1.25 million in the early 1950s. Adjusted for inflation, this would be equivalent to roughly $12 million in today's currency. The high cost of the UNIVAC 1 made it prohibitive for many organizations, but its groundbreaking technology paved the way for the modern computer era.
The colossus computer weighed over 100 pounds
For standard US commercial size, 40lb.
Computer storage does not have any mass.
A ream of computer paper ways just over 1 kilogram.
Oh, that's a happy little question! The printer that came with the first UNIVAC system cost around $61,000 back in the 1950s. Can you imagine the joy it brought to those early computer users? Just remember, mistakes are just happy accidents waiting to be fixed!
It depends entirely on the computer. Some were relatively small, others were larger than a trailer.
The Apple 1 computer weighed about 24 pounds.
The exact weight depends on the exact computer. It would weigh 1/6 of whatever it weighs on Earth. So if the computer weighed 10 pounds, it would weigh 1-2/3 pounds on the moon.
Commercial leaf vacuums vary in weight. You can find one that is approximately 7.5 lbs. Most good ones advertise minimal weight. The weight can be much heavier though.