May 2024
Intermediate to advanced
665 pages
23h 2m
English
book
The X86 Microprocessors: Architecture and Programming (8086 to Pentium), 1st Edition
by Lyla B. Das
Content preview from The X86 Microprocessors: Architecture and Programming (8086 to Pentium), 1st Edition
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Introduction
In Chapter 9, we used the parallel port interfacing IC 8255 for many applications. is was
done to illustrate the fact that data is available for transfer in the parallel form – so it can be sent
to various external peripherals each of which has specifi c functions. In all these applications,
the 8255 PPI mostly was used as a data transfer intermediary, along with the capability of
generating signals for controlling the individual peripherals.
In this chapter and the next, we will familiarize ourselves with a few more peripheral chips
with specialized applications. e fi rst is the 8253/8254 timer chip.
10.1 | The Programmable Interval ...
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