A LOT of people, but the first ones were Charles Babbage (1791 to 1871) was the first to design and build a "working" computer (it was full of bugs, but he was right, years later it was finished and it worked just fine.) It was mechanical, but he had plans for one that ran on steam power. Then there was his lady friend, Ada Lovelace (of literary fame), who was the first programmer. And George Boole (1815 - 1864) who proposed the math that EVERY modern computer depends on.
Depends on whatever you wan't build it for the computer, or build it completely from hardware.You can very easily create your own calculator for PC with Visual Basic 2010. And for Mac you can use xCodeFor the hardware version Google:"How to build a calculator +electronics"
Mechanical engineers are responsible for both.
in 1902 by Charles calculus
the chinese and it is for counting. it is the original calculator
with out mechanical engineering the world is a big zero. no products in the world is created artificially with out the application of mechanical engg. that's y i have studied mech engg.
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Some of the things a person with a mechanical engineering degree can do are product design, manufacturing, and energy.
A weight gain calculator is useful in determining how many calories you need to intake on a daily basis in order to gain "good" weight and build muscle.
There is no need to buy a mortgage calculator as there are vast number of calculators that are readily available to you for free online. As a worst case, you should be able to build your own in excel.
You can either build a sturdy bed or create tools or build a bench or create a raft or bridge
An amortization calculator allows you to estimate your monthly loan repayments. There a number of amortization calculators available online including instructions on how to build one yourself. Simple search 'create amortization calculator'.