GPS stands for Global Positioning System and is a navigation system based on 24 different satellites. Originally, it was intended for military use and these satellites where placed into orbit by the U.S. Department of Defense; however, in the 1980s, the government made the system available for regular civilians to use. The GPS satellites transmit a signal to Earth indicating the current time. Th...

An e-book reader is a mobile electronic device used to read books and periodicals. They are also called e-book devices or e-readers. While any device that is capable of displaying text on a screen can act as an e-book reader, only the ones with the e-paper technology are technically consider an e-reader. These are specialized devices that are geared towards making it easy to read books using an...

A drawing tablet is a computer device that makes it possible for people to draw graphics and pictures. They are also referred to as a digitizer, digitizing tablet, graphics pad, or graphics tablet. The device consists of two items: a pad and a pen. When the pen touches the pad, the motion is captured by the computer and is displayed in the computer program being used. It also renders the amount...