One public use of computers is the airline ticket terminal within an airport. It is used to redeem pre-purchased airline tickets online. The way the terminal is able to redeem and print airline tickets is by connecting to the Internet where this allows the terminal to communicate with a server where it is able to retrieve the ticket information and validate the credentials entered into the terminal. Another commonly known use of the computer is as a personal computer or in other words as a computer used specifically for a user. Examples of personal computers are the laptop or desktop you use to do your school work. Another use of computers is data processing to allow scientists to better understand the world around us. The use of computers is limitless as new technology continues to be produced, as well as the vast amount of different ways to use computers