This section describes the functions, character
istics, operating procedures, programming consid
erations, and normal operator maintenance of the
TWU9101 Keyboard Typewriter Console (see
The TWU91 01 meets the needs of users with
heavy demands for console input and output
through the Central Processor.
The TWU91 0 1 console interfaces with the
Level 6 system by means of a single-board
Multiple Device Controller (MDC91Ol), a console
Device-Pac (KCM910l), and a 50-foot cable.
The console is capable of printing up to 30
characters per second and provides 132 print
positions for the 64-character ASCII code set.
Each character printed by the impact print
head is formed by a 7 by 9 dot matrix.
The device can accommodate variable fan-fold
paper forms in widths of from 4 to 15 inches and
can print 1 original and up to 4 copies. Horizontal
spacing is 10 characters per inch; vertical spacing
is 6 lines per inch.
The device is intended as the primary input/
output device for communication to and from the
The following are the detailed operating pro
cedures and specific user considerations for oper
ating the TWU9101 Keyboard Typewriter Con
sole (see Figure 8-2 for Controls and Indicators).
Pressing the ON pushbutton applies power to
Pressing the OFF pushbutton removes power
from the device.
Figure 8-1. TWU9101 Keyboard Typewriter Console
Figure 8-2. TWU9101 Controls and Indicators
KEYBOARD TYPEWRITER CONSOLE