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Texas Instruments Manuals
Control Unit
990
Maintenance manual
Texas Instruments 990 Maintenance Manual
Computer 16 lnput/16 output ttl data module
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Also See for 990
:
Operation manual
(276 pages)
,
User manual
(274 pages)
,
Manual
(211 pages)
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Section I. General Description
General
Equipment Overview
Transmit Mode
Receive Mode
Interrupt Response
Physical Characteristics
Electrical Characteristics
Module Address
General
Unpacking
Inspection
Installation
Jumper Connections
General
Programming
Section IV. Theory of Operation
General
Data Module Input Logic
Multiplexer
Data Module Output Logic
Output Decoder
Multiplexer Input Select for CRUBIT
Data Selector/Multiplexer
Data Module Output Flip-Flop and Timing
4-Line-To-16-Line Decoder/Multiplexer
Output Flip-Flops
Output Transistors
Data Module Interrupt Logic
Section V. Maintenance
General
Maintenance Philosophy
Special Test Equipment
Input/16 Output TTL Data Module
Troubleshooting Procedures
Scoping Loops
Test Procedures
Output Line Reference Chart
Model 990/4 Computer Hot Mockup System
Model 990/10 Computer Hot Mockup System
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II
I
TEXAS INSTRUMENTS
Improving Man's Effectiveness Through Electronics
Model 990 Computer
16 lnput/16 Output TTL Data Module
Depot Maintenance Manual.
MANUAL NO. 945407-9701
ORIGINAL ISSUE 1 AUGUST 1976
Digital Systems Division
I
I
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