Chapter 1 System Overview; Display Unit - NCR PC4i Service Manual

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Chapter 1
System Overview
RCR PERSORAL COMPUTER HARDWARE
The NCR Personal Computer consists of a main Display
Unit and a Keyboard. The computer is available in
different models, and has a variety of options that
can be added to each model. Expansion boards from
non-NCR (nthird partyn) manufacturers can be used
with
the NCR Personal Compter, .as well as expansion
boards offered by NCR.
DISPLAY URIT
The standard Display Unit consists of the following
parts:
o Cabinet
o Power Supply
o 1 or 2 flexible disk drive(s) or one flexible disk
drive and one hard disk drive
o 12-inch monochrome CRT display or 12-inch color
CRT display
o Processor Board with:
o 8088 Microprocessor
o 256 KB Random Access Memory (RAM)
o 16K Read Only Memory (ROM)
o RS-232-C Serial Interface
o Centronics Parallel Interface (for printer)
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