The RAND Tablet is a graphical computer input device developed by The RAND Corporation. The RAND Tablet is claimed to be the first digital graphic device that is low cost. The creation of the tablet was performed by the Advanced Research Projects Agency. The RAND Tablet was one of the first devices to utilize a stylus as a highly practical instrument. 
The tablet is connected to an input of a computer and/or an oscilloscope display. The display would register the input and display it on the computer screen.
- Davis, M.; T. Ellis (August 1964). "The RAND Tablet: A Man-Machine Graphical Communication Device". ARPA. Retrieved 12 August 2014.