Serial
Numbers
Serial
numbers
are affixed
to
each
computer
and
bus
expander
for identification purposes. A
decal on each
product
has
the
serial nunlber. An example serial
number
is
explained below:
Serial No. 2322A01234
Location: Behind
the
power supply access cover on
the
bottom
of
the
chassis for
computer
and
bus expander.
Description:
5-digit unique identifying number.
Country
of Origin Code.
Product
Code, decoded as:
First
2 digits + 60 = Last 2 digits
of
year
product
was introduced
or
significantly changed.
Last 2 digits
=
number
of week in year
product
was introduced
or
significantly changed.
Hardware
Terminology
Hardware
is
used
to
define physical elements of these products. Different
parts
and
locations of
hardware items are explained below.
Products
Types
and
Parts
The
following
terms
are used
to
describe
products
and
their
main
parts
and
areas:
•
Computer
- A
product
containing
the
central processing
unit
(CPU)
and
other
assemblies
such as
RAM
cards, interface cards,
and
other
accessories. Sometimes
the
computer
is
referred
to
as
the
mainframe.
•
I/O
Card
cage -
The
narrow slots for accessories in
the
back
of
the
computer
and
bus
expander. Four slots are available in
the
computer, in
the
bus
expander
there
are eight
of
these slots. Distinction between these slots are:
•
Counting
from
the
top, every
odd
slot
is
an
accessory
card
slot .
• Counting from
the
top, every even slot
is
an
I/O
card
slot.
•
System
Slots - Two wider slots below
the
computer's
accessory slots for
the
processor
and
HP
9854X Video Boards.
•
Internal
(circuit) - A circuit, such as
an
RS-232 interface,
that
is
part
of
the
processor
board.
Internal
does
not
mean
'inside
the
computer's
case
parts'.
•
External
(circuit) - A circuit, such as
an
accessory
RAM
card,
that
is located on
an
assembly
other
than
the
processor board.
External
does
not
mean
'outside
the
computer's
case
parts'.
•
Peripheral
- A device
external
to
the
computer, such as a keyboard, monitor, disc drive,
plotter,
printer, bus expander, etc.
•
Bus
Expander
- A device
external
to
the
computer
that
connects
to
the
computer's
I/O
bus.
This
device provides power
to
its installed accessory
cards
and
permits
more
of
these
cards
to
be
used in
the
computer
system. Sometimes
they
are called bus extenders.
•
System
-
One
or
more
computers
with
one
or
more peripherals connected
together
to
run
an
application for a desired
end
result.
2
Product
Information
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