MessagePad H1000

MessagePad, also known as Original MessagePad or OMP, is a personal digital assistant developed by Apple Inc. for the Newton platform. It was released on August 3, 1993, and was the first device to run on Newton OS. It was replaced by the MessagePad 100, released in March 1994, which has the same hardware and model number as the OMP, and only differ in Newton OS version.