Inventor Chester Carlson used static electricity created with a handkerchief, light and dry powder to make the first copy on Oct. 22, 1938. The copier didn't get on to the market until 1959, more than 20 years later
Ivan Sutherland develops Sketchpad, one of the first computer-aided design programs.
Robert Metcalfe links computerstogether using Ethernet.
The first mobile phone call was made by Motorola employee Martin Cooper. Using a prototype of what would become the Motorola DynaTAC 8000x, the world's first commercial cell phone.
Apple revolutionizes music listening by unveiling its iPod MP3 music player.
Originally introduced in 2007, the iPhone was one of the first smartphones to make use of a multi-touch interface. After its release, the iPhone set the standard for future smartphone design and usability.
