The modern number system was invented by the Indians. Despite that, the numeral system used today is called Arabic or Hindu-Arabic because the Arabs were the ones to bring it to Europe.
The number system invented by the Indians was a combination of 10 digits. It is a place-value system, which means a zero is necessary for arithmetic operations. The Italian mathematician Fibonacci, also known as Leonardo Pisano Bigollo, introduced the Arabic numbers to Europe in the 12th century. Before the arrival of the number system, Roman figures were used instead. The Romans used an additive and subtractive system, which was largely a legacy of the ancient Etruscan period.Learn More
Items invented in 1998 include Windows 98, the iMac computer and the MP3 player. Viagra was also approved for use by the United States Food and Drug Administration in 1998.Full Answer >
In 1897, the pencil sharpener was invented by John Lee Love. He was issued a patent for it on Nov. 23, 1897. That style of pencil sharpener is still in use today in schools and offices around the world, according to About.com Inventors. It was one of several noteworthy inventions of 1897.Full Answer >
Algebra, in its earliest form, was first used by the Babylonians as early as 1700 B.C. It is possible that algebra was used before this time, but historical records are incomplete. However, the algebra used by early civilizations was much more rudimentary than the algebra currently in use today.Full Answer >
Several products and procedures were invented in 1974. One example is the Post-It Note, which was created by American Arthur Fry. Since their invention, Post-It Notes have been sold in over 100 countries across the world and are still used over 40 years later.Full Answer >