A keyboard is a piece of end user hardware that is used to input data into a computer. It consists of a set of keys that can be pressed to create characters or perform actions. The keyboard is one of the most important pieces of end user hardware, as it is the primary way that … Read more

Googol and googolplex

A googol is a 1 with a hundred zeroes after it, denoted 10100, while a googolplex is 1 with a googol zeroes after it, denoted 10googol. The terms were coined by 9-year-old Milton Sirotta, nephew of American mathematician Edward Kasner, and were popularized in the book “Mathematics and the Imagination” (1940) by Kasner and James … Read more


Cardinality is a technical term used in mathematics, specifically in set theory, to describe the size of a set. More specifically, cardinality is a measure of how many distinct elements are in a set. In other words, cardinality tells you how many different things are in a set. For example, consider the set of all … Read more


The term “Millennium” refers to a period of time lasting 1000 years. This term is often used in reference to the end of the world or to a future golden age. How long is a millennium years? A millennium is a unit of time equal to 1,000 years. Is 2000 the new millennium? Yes, 2000 … Read more