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The IBM 2845 Display Control, coupled with an IBM
12265 Display Station Modell, forms a display system that
provides rapid visual access (via communications facilities)
to data stored in a remotely located System/360 Models 25
I
through 85 or 195. The 2265 Display Station Modell
(hereafter called the 2265) is a high-speed display terminal
that operates under control of the compact 2845 Display
Control. The display system is designed to meet the
requirements of customers whose facilities are widespread
and who need a small number of display terminals at
each facility capable of two-way communications with a
centrally located computer.
For example, consider a company whose central
processing unit is located at company headquarters
in
Chicago and whose branch offices and warehouses are
scattered throughout the country. Each outlying loca-
tion may be equipped with a number of 2265/2845 dis-
play systems commensurate with its business volume.
By means of communications facilities (such as phone
lines, data channels, etc.), each display system can store
data in, and receive visual information from, the central
processor.
This system satisfies the needs of customers who re-
quire relatively few displays or who desire to supplement
an existing display system. It is ideally suited to applica-
tions that require immediate data acquisition capabilities
at relatively low cost.
An inquiry concerning an account, a transaction, a
production schedule, etc., can be entered quickly and easily
in the remote computer from the 2265 keyboard. After
being processed by the computer, the desired information
is displayed on the 2265 screen in the form of visual data.
Here, the display information can be analyzed, modified if
necessary, and, when desired, returned to the computer
for further processing and storage.
The 2845 may also be equipped with a special feature
to permit attachment of an IBM 1053 Model 4 Printer.
The Printer may be used to produce a paper copy of data
sent from the central processor or of data displayed on
the 2265 screen.
HIGHLIGHTS
• Character presentation uses an advanced stroke-generation
technique that results in characters of unusual clarity
and smoothness.
• 2265 CRT uses Type P39 phosphor to produce a green-
tinted display.
Introduction
• Each 2265 has a capacity of 960 characters, with an
optional display format of either 15 rows of 64 charac-
ters or 12 rows of 80 characters.
• Transmission speeds of either 1200 bps or 2400 bps.
• Optional attachment of an IBM 1053 Model 4 Printer.
• Optional attachment of an alphameric keyboard which
may be located up to 5 feet from the Display Station.
• Rapid cursor (character position marker) movement
is provided in forward and backward directions.
• By operator control, the display screen can be erased
either a line at a time, a section at a time, or completely.
• Optional Tab feature.
• A nondestructive cursor is standard; a destructive
cursor is optional.
• Line addressing to permit selective writing is also
available.
• For World Trade customers, a 50-Hz power option is
available. Also available are keyboards for the following
languages:
United Kingdom English
French
German
GENERAL DESCRIPTION
The 2265/2845 display system consists of two separate
1 units: the IBM 2265 Display Station Modell and the IBM
2845 Display Control. The 2845 is a free-standing unit
which contains the storage and control logic necessary to
interface with a 2265 and appropria.te communications
facilities. The unit provides for additional features such as
the printer adapter and the 1200-bps or 2400-bps data set
adapters described below.
The 2845 is designed for remote attachment to a
System/360-type I/O channel through an IBM2701 Data
Adapter Unit equipped with IBM Terminal Adapter Type
III. Program compatibility permits multidropping with the
IBM 2848 Display Control. Up to sixteen 2845's may be
attached to the same communications channel. The
relatively small size of each unit enhances the display
system's desirability in installations wherein limited space
is a factor.
Introduction
7
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