Original PC Hardware Reference
Original PC Hardware Reference
Original PC Hardware Reference
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CD: 6 <strong>Original</strong> <strong>PC</strong> <strong>Hardware</strong> <strong>Reference</strong><br />
Figure 2 The IBM <strong>PC</strong> rear view.<br />
On Off<br />
System<br />
power<br />
Power supply vent<br />
Display power<br />
(IBM monochrome<br />
display only)<br />
IBM finally officially withdrew the <strong>PC</strong> from the market on April 2, 1987. IBM’s plans for the system<br />
became obvious when the company didn’t announce a new model with the enhanced keyboard,<br />
as it did with other IBM systems. In retrospect, it is amazing that the system was sold over<br />
a period of nearly six years with few changes!<br />
Table 1 shows the part numbers for the IBM <strong>PC</strong> system units and options.<br />
Table 1 IBM <strong>PC</strong> Models and Part Numbers<br />
Keyboard<br />
connection<br />
Description Number<br />
<strong>PC</strong> system unit, 256KB, one double-sided drive 5150166<br />
<strong>PC</strong> system unit, 256KB, two double-sided drives 5150176<br />
Options Number<br />
<strong>PC</strong> expansion-unit Model 001 with 10MB hard disk 5161001<br />
Double-sided disk drive 1503810<br />
8087 math coprocessor option 1501002<br />
BIOS update kit (10/27/82 BIOS) 1501005<br />
Cassette connector<br />
(<strong>PC</strong> only)<br />
Option Expansion<br />
slots
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