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1.1 GENERAL
SECTION I
GENERAL
DESCRIPTION
The Texas Instruments Model 911 Video Display Tenninal (figure 1-1)
is
a versatile communica-
tions terminal
that
provides maximum operator convenience in a distinctively styled package.
The tenninal incorporates the following features
that
enhance operation:
• Separate keyboard
to
facilitate placing the keyboard in the most convenient position
for the operator
• Upper- and lower-case gothic character set
• 32-character graphic drawing set (i920-character display only)
• Katakana character set (Japanese Katakana model only)
• Instant data display capability
to
allow the
computer
to display immediately a full screen
with infonnation
• A special-function bit
that
accompanies each character in memory, specifies whether the
character
is
displayed at dual (high
or
low) intensity, and indicates such things
as
a pro-
tected field if used
as
a software flag (feature
not
available
on
Japanese Katakana model)
• Standard typewriter keyboard
• Numeric pad
to
facilitate entry
of
numerical quantities
• Programmable function keys.
In addition
to
these operator features, the terminal provides programmable cursor positioning and
editing functions, a self-contained refresh memory plus a full-ASCII keyboard with additional
function keys suited
to
the specific application. The Japanese model keyboard has a KANA mode
key
to
select 64-character Katakana set.
The Model 911 Video Display Terminal (VDT) kit
is
a peripheral unit
that
communicates with
the
Model
990
Computer via the Communications Register Unit (CRU) serial data bus. The kit consists
of
the following components:
• Model 911 VDT Assembly, Part Number 946075
• Model 911 Keyboard Assembly, Part Number
948560
• Interconnection cable, United States and Japan (unshielded), Part Number 948561;
European (shielded),
Part Number 936500
•
Model 911 VDT Controller, United States and European, Part Number 946076
• Model 911 VDT Controller, Japanese, Part Number 2263490.
Figure
1-2
illustrates the standard configuration
tor
the Model 911 VDT kit.
1-1
Digital
Sy~tems
Division
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