Section I. General Description; General - Texas Instruments 990 Installation And Operation Manual

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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