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_ _ _ _ LEAR SIEGLER, INC.
DATA PRODUCTS DIVISION
DISPLAY
MEMORY
24 LINES,
80
CHARACTERS PER LINE
(CONTROL)
CRT DISPLAY
MONITOR
ADM 3A
CONTROL
INPUT 10UTPUT
PORT
ROUTING
IN
HALF
DUPLEX
COMPUTEFi
KEYBOARD
EXTENSION INTERFACE
TO AUXILIARY DEVICE
Figure 1-2. ADM 3A Data Flow Block Diagram
• Four keyboard layouts:
- USASCII-QVlERTY
- UKASCII-QVlERTY
- Ckrman-Q\\YERTZ
- French-AZERTY
1.3 OPERATIONAL DESCRIPTION
The ADM 3A is an interactive device which is
1-2
used
to
enter, display, and send information to a
host computer, and to receive and display
information from the computer. Using a keyboard
similar to that of a standard typewriter, the
operator
may
enter information which is
immediately transmitted to the computer, and
may be simultaneously displayed on a cathode ray
tube (CRT). Data from the computer is received
and displayed at baud rates as high as 19,200 (the
maximum baud rate when using the current loop
option is 9600).
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