Model 911 Vdt Standard Configuration - Texas Instruments 990 Installation And Operation Manual
Video display terminal
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Also See for 990:
- Operation manual (276 pages) ,
- User manual (274 pages) ,
- Manual (211 pages)
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945423-9701
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91 1 VDT CONTROLLER.
JAPANESE. PART NO.
2263490
91 1 VDT CONTROLLER
UNITED STATES
AND EUROPEAN.
PART NO. 946076
INTERCONNECTION CABLE
s:::::::l
t:::::l
(SHIELDED) PART NO. 936500
'------------~
(UNSHIELDED\ PART NO.
948561.0PTIONAL CABLES UP
~
TO 2000 FEET (610 METRES)
LONG MAY BE SPECI FlED.
91 1 VDT KEYBOARD
ASSEMBLY
PART NO. 948560
(A)134307A
911 VIDEO
DISPLAY UNIT
PART NO. 946075
Figure 1-2. Model 911 VDT Standard Configuration
Display characteristics such as refresh rate (50- or 60-hertz), character capacity (1920 or 960
characters), and alphanumeric character set (display symbols) are specified by read-only memory
(ROM). Graphic character generator logic is only available in the I 920-character display.
Standard VDT controller options include:
•
Single-display, 960-character capacity
•
Dual display, 960-character capacity
•
Single display, 1920-character capacity
•
Dual display, 1920-character capacity.
Figure 1-4 is a simplified block diagram of the VDT controller.
1-3
Digital Systems Division
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