The concept of a touchscreen dates to 1965; the first commercially successful touchscreen phone was the iPhone in 2007.

YouTube was originally a dating site before pivoting to general video sharing in 2005.

GPS exists because of Einstein’s theory of relativity correcting time differences.

The first mechanical computer, the Difference Engine, was designed by Charles Babbage in 1822 but never fully built.

The sewing machine sped up clothing production.

The harmonica, also known as a mouth organ, was invented in Germany in the early 19th century.

The typewriter improved document production efficiency.

Nuclear reactors generate electricity by using the heat from controlled fission chain reactions to boil water and spin turbines.

The Internet of Things (IoT) refers to the network of physical devices embedded with sensors and software to exchange data.