... others.
Such simultaneous input/output of several-bit data is referred to as paralleldata
input/output and the peripheral functions for paralleldata input/output are
called "I/O ports", ...
Chapter 8
Parallel Data Input/Output
Although the programs described in Chapter 6 use the memory and
CPU registers only, this chapter explains how to input and output parallel data.
Among ... ports", which have registers and pins as shown in Figure 8.1.
Figure 8.1: ParallelData Input/Output
Parallel data input/output using I/O ports are performed through
registers as shown...