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The Model 810 Printer is an impact printer with
9 x 7 dot-matrix character structure and a ninety-
six-character, full ASCII, compressed print set. The
810 printer prints 132-column lines at 150 characters
per second with eight-channel vertical-format control.
The Model 2230 and Model 2260 Line Printers
print 136-column lines at 300 lines per minute and
600 lines per minute, respectively, with vertical-
format control, internal self-test, static eliminator,
and standard ASCII, sixty-four-character set.
Additional Model 911 Video Display Terminals
are available as single- or duai-terminal displays with
keyboards and interfaces. A maximum of twelve
VDTs can be installed in their predefined slots in a
two-chassis configuration. Additional VDTs can be
installed in other vacant slots by redefining the
interrupt assignments. VDTs can also be installed in
add-on chassis.
The Model 804 Card Reader is a 400-card-per-
minute reader that takes standard-sized, eighty-
column punched or marked cards.
The Silent 700· Model 733 ASR and Model 743
KSR Data Terminals use Texas Instruments unique
solid-state, thermal printheads for virtually silent
printing of eighty-column lines at thirty characters
per second. A typewriter-style, limited ASCII
keyboard allows operator entries.
The Model FD800 Floppy-Disk System provides
transportable diskette media to smaller members of
the 990 family of systems.
·Silent 700 is a registered trademark of Texas Instruments.
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Communications Equipment
and Special Interface Devices
Optional communications equipment includes an RS-
232-C communications interface module for
asynchronous and synchronous transmission at
selectable baud rates from 75 to 9600. Other
supporting options include asynchronous and
synchronous modems and auto-call. A variety of
interface modules for custom-device interface or
process monitoring and control are available
including analog-to-digital converters and digital
input and output interfaces. A variety of
Teletypewriter / Electronics Industries Association
(TrY / EIA) interfaces are also available.
990 Chassis Considerations
The 990 computer is packaged in a thirteen-slot
chassis with a programmer panel. The chassis
includes a 4O-ampere power supply and a disk-loader
read-only memory (ROM). One or more chassis can
be added to the system to provide additional
mounting space or dc power.
Customer-Support Services
Texas Instruments customer services encompass the
following areas: hardware installation, software
installation, hardware maintenance, software update,
education classes, and telephone hot line. Individual
services can be selected to best suit application and
customer requirements.
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