A computer includes a primary processor, a primary memory, and a primary
input/output (I/O) interface that communicates with the primary processor
and the primary memory. A primary display communicates with the primary
I/O interface. The primary processor, the primary memory, and the primary
display are operated in active and inactive modes and are powered down
when the computer is in the inactive mode. A secondary processor
dissipates less power than the primary processor. A secondary display
communicates with the secondary processor. The secondary processor and
the secondary display are powered up when the computer is in the inactive
mode. The secondary processor and display support PDA-like functionality
when the computer is in the inactive mode.