Napier's Bones

• Napier's Bones was invented in 1614
• Napier's Bones let people preform complex caluations easily
• Nothing came before Napier's Bones wich is why it was such an imapct in the world
• John Napier inved the "bones"
• A intresting fact about Napier's Bones is that There is a crater on the Moon named after him and his cretion the "Naper"