Charles Babbage designed the first digital mechanical computer, the Analytical Engine circa 1840, but it was never built.
It is unknown who designed the first known analog mechanical computer, the Antikythera Mechanism circa 100 BC. Its commonly assumed to have been Archimedes.
The main defining criteria for computers is that they must be able to fully automate calculations without further human interaction, once initially set up. If a device can do this neither the technology nor mode of calculation used (digital or analog) used in it matter its a computer, if it cannot do this its not a computer.
floating point arithmetic, but remember it was 100% mechanical
It depends what you mean by the first computer; arguably the first was the "difference engine" designed by Charles Babbage. This was a mechanical computer, a modern version, built to Babbage's design is 3.4 metres long by 2.1 metres high.
She worked with Charles Babbage, who designed the first mechanical computer. There is a programming language called ADA in her memory.
If by "computer" you mean general purpose programmable digital computer then most likely the mechanical Analytical Engine in the 1840s, but Babbage was never able to build it.If you mean any computer (including special purpose analog) then most likely the mechanical Antikythera mechanism found in a shipwreck off Greece in 1900. It is believed to have been made and used in the 2nd century BCE.If you mean electronic computer (including special purpose) then most likely the Atanasoff-Berry Computer (ABC) designed in 1937.If you mean electronic general purpose programmable digital computer then most likely ENIAC designed in 1943.If you mean "computer" as originally defined in dictionaries, that was not designed it evolved as the first computer was a human computer.There are lots of "first computers".
Charles Babbage was a 19th century English mathematician, philosopher, inventor, and mechanical engineer known as the "father of the computer". He designed the first mechanical computer called the Analytical Engine, which is considered a precursor to modern computers. His work laid the foundation for the development of computer technology.
In 1837, Charles Babbage, a British professor of mathematics described his idea for the Analytical Engine, the first stored-program mechanical computer. The Analytical Engine was designed to be powered by a steam engine and was to use Punched Cards, which was used to program mechanical looms at the time
1812
Because he designed the first mechanical computer.
Hollerith
In 1837, Charles Babbage, a British professor of mathematics described his idea for the Analytical Engine, the first stored-program mechanical computer. The Analytical Engine was designed to be powered by a steam engine and was to use Punched Cards, which was used to program mechanical looms at the time.
It was Charles Babbage
it was an astronomical calculator. A form of mechanical analog computer. The nordon bombsight was also a form of mechanical analog computer.