The operations performed by a computer to retrieve, transform, or classify information.

Information that a computer returns to a user such as images on a screen, sounds from speakers, and printed pages.

The saving of information on memory chips, discs, or other storage media by a computer for later use.

An early computing machine that used punched cards and metal pins. It was used to compile the 1890 US census.

A smaller, faster, cheaper, and more durable electronic device that replaced mechanical relays, which were slow and tended to wear down over time.

An electronic device that allowed entire computers to be built into a single board, replacing modules for each part of the computer. Microchips paved the way for personal computer ownership.

A system for making digital resources publicly available over the internet using a web browser that paved the way for email, chatrooms, and social media sites

A mobile phone that functions as a computer and allows users to access the internet.

The fastest, most powerful computers that exist at a given time. These computers have processing capabilities designed to solve problems that are too complex for regular computers.

A field of study that looks at how computers and other kinds of technology interact with humans.