used in the ThinkPad 701 series. When the machine is closed the keyboard is folded inwards, making the machine more compact. However, when the machine is open and in use, it slides out, giving the user a normal-sized keyboard. That keyboard, referred to as a butterfly keyboard, which is widely considered a design masterpiece and is in the permanent collection of the Museum of Modern Art in New York City.

:The ThinkPad 760 series