The Lighted Program Function Keyboard (LPFK) is a

computer A computer is a machine that can be programmed to Execution (computing), carry out sequences of arithmetic or logical operations (computation) automatically. Modern digital electronic computers can perform generic sets of operations known as C ...

input device manufactured by IBM that presents an array of buttons associated with lights. Each button is associated to a function in supporting software, and according to the availability of that function in current context of the application, the light is switched on or off, giving the user a graphical feedback on the set of available functions. Usually the button to function mapping is customizable.

External links

* http://brutman.com/IBM_LPFK/IBM_LPFK.html Computer keyboards LPFK {{Compu-hardware-stub