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Honeywell 200 Series User Manual

Honeywell 200 Series
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SECTION
I
INTRODUCTION
The
Model
120,
a
solid-
state,
high-
speed
computer
of
the
Honeywell
Series
200
Data
Processing
System,
is
oriented
toward
business
data
processing
applications.
Besides
func-
tioning
as
an
independent
data
processor,
the
Model
120
can
also
be
used
effectively
as
an
input/
output
processor
for
larger
computers.
The
basic
system
consists
of
a
central
processor
to
which
a
high-speed
printer,
a
card
reader,
and
a
card
punch
can
be
connected.
Since
one
of
the
most
significant
features
of
the
Model
120
is
its
high
degree
of
internal
modularity,
a
varied
complement
of
peripheral
equip-
ment
may
be
added
to
the
basic
system
configuration
to
meet
growing
data
processing
require-
ments.
This
capability
enables
the
Model
120
to
satisfy
the
input/
output
requirements
of
virtually
any
computer
application.
The
Model
120
main
memory
is
a
coincident-current
memory
consisting
of
high-speed
magnetic
cores
which
are
randomly
addressed
through
a
binary
addressing
system.
This
addressing
system
greatly
simplifies
the
modular
expansion
of
memory
because
it
eliminates
the
need
for
complex
machine-language
coding
schemes
to
represent
addresses
in
expanded
memory
configurations.
The
basic
memory
complement
is
2,048
character
locations,
which
may
be
expanded
in
modular
increments
to
32,768
locations.
The
first
memory
module
added
must
be
2,048
characters,
after
which
up
to
seven
modules
of
4,096
characters
each
may
be
added.
The
memory
cycle
time
of
the
Model
120
(i.
e.,
the
time
required
to
read
and
restore
one
character
in
main
memory)
is
three
microseconds.
Another
important
feature
of
the
Model
120
is
the
linear-
select
control
memory
which,
like
the
main
memory,
is
a
magnetic-core
storage
unit.
The
control
memory
consists
of
16
individually
addressable
registers,
each
of
which
is
capable
of
storing
one
main
memory
address.
Its
primary
function
is
to
provide
storage
for
the
operational
registers
of
the
central
processor
and
the
various
activated
peripheral
devices.
More
specifically,
it
retains
the
ad-
dresses
that
describe
the
various
transfers
of
information
to
and
from
main
memory,
plus
the
addresses
of
program
instructions
and
operands.
The
central
processor
traffic
control
unit
in
the
Model
120
consists
of
three
read/write
channels,
which
makes
possible
the
performance
of
peripheral
operations
simultaneously
with
computing.
1-
1

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Honeywell 200 Series Specifications

General IconGeneral
BrandHoneywell
Model200 Series
CategoryDesktop
LanguageEnglish

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