Did Leonardo da Vinci invent the pulley?

No, Leonardo da vinci did not invent the calculator. The calculator was created more recently in the 1900's.

It is true the the great leonardo da vinci invent the design for a parashute but it was not bulit intill later on.

Leonardo da vinci invent a Flying Machine in 1492 !

Leonardo da vinci did invent the ornithopter so he could prove that people can fly like birds.

Da Vinci invented the viola organista.

Leonardo Da Vinci quit painting when he died in 1519. Leonardo Da Vinci did not quit painting when he died but when he found out that he would rather invent.

That is easy: he did not!

Leonardo da Vinci will be remembered for his art, maths, and science inventions he intended to invent.

Yes. Leonardo Da Vinci did invent the hidden blade, it's not its not a exact replica from the Game "Assasins Creed II". BTW he did not invent it in the game..

he invented it in in 1496

He did not invent the catapult only improved it.

No, Leo did not invent the paper airplane.

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You cannot INVENT something which already exists. Leonardo studied the structure.

The sketches are not dated.

Because he wanted to, do you have a problem with that?

it was Leonardo da vinci

Yes he did (example:lyre)

yes he did he aslso did

Leonardo Da Vinci did not invent the scissors. There have been examples found of Roman scissors in the modern form, from long before Leonardo lived.

Leonardo started to invent things when he was in his 20s

Leonardo Da Vinci's Stink Bomb was invented on August 1483

Leonardo da Vinci designed his self-propelled cart in his manuscripts. His self-propelled cart is seen as the ancestor to our automobile.

My thought on it is, he was born to invent, he was brilliant.... Also his real name is, Leonardo di ser Piero da Vinci, not many people know that... Well, I did'nt anyway?

He did sketch the precursor for our scuba gear.