Learn more › Copy machines are an office equipment staple. Businesses large and small and many families use an office copier every day. The best copy machines usually do more than make copies.

A computer is mostly a digital copy machine. Computers calculate ... Displaying and printing is reading the formatted data in RAM and writing to the peripheral device. Once again, a copy.

The second great copying machine was writing. When the Sumerians transposed spoken words into stylus marks on clay tablets more than 5,000 years ago, they hugely extended the human network that ...