Hermione put on a contemplative face for a moment, "Computers can process huge amounts of data very quickly. They also store and display data with the use of a monitor which is an electronic device that shows pictures for computers. Monitors often look similar to televisions; the main difference between a monitor and a television is that a monitor does not have a television tuner to change channels. Monitors often have higher display resolution than televisions. People use computers every day at work, at school, and at home. Computers are used in factories to control how things are made and in offices to keep records."