Those neat little personal organisers you write on with a stylus.
Originally powered by Motorola Dragonball CPUs with clock speeds between 16 and 33 MHz, they nowadays use Intel XScale processors which are a later version of the ARM and StrongARM CPU which they previously ran (Intel bought the rights to the ARM). Presumably they emulate the old 680x0 chips in software. The Palms run PalmOS as their OperatingSystem.
See also:
http://www.palm.com