
In this chapter, you will learn
l
The necessity of using dedicated hardware
for peripheral interfacing.
l
The architecture and programming features
of the chip 8255.
l
The method of interfacing an ADC to the
8086.
l
The methods of generating different wave-
forms using a DAC.
l
The way in which an LCD can be used to
display ASCII characters.
l
The principle of the stepper motor and
how it is controlled by the CPU.
l
Hex keyboard interfacing to the 8086.
l
The interfacing of dynamic multiplexed
LEDs with the 8086.
l
That in all the above cases the 8255 is
used as the parallel interface controller.
peripheral
interfacing–i
9
Introduction
In Chapter 6, we made ...