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Monitor Key and
Phone Jack on
Left Side
Rotary Switches
Figure 4.
IBM 2796 Data Entry Unit
80 Column Card
Numeric Data
Col 71-80-Card fed 80
column end first, face
towards operator
Col 10-1-C ard fed col
umn 1 end first, face of
card away from
operator
Identification Badge
Numeric
Data
IBM 013 Badge Punch
columns 13 through 22
Note: Detailed information about the badges used for
the 2790 system is given in the Systems Reference
Library Manual, 357/1030/2790 Badge Specifications,
GA21-9028.
10
Entry Flag
Registration Punches
Col 66— "9" and " 11"
punches
Col 15— "9" and " 11"
punches
Registration Punches
IBM 013 Badge Punch
column 8— "9" and " 11"
punches
Card or Badge Slot
Error Indicator/
Reset Button
2795 Data Entry
A 2795 data entry as assembled in the 2715 TCU consists
of 12 digits of data plus transaction-header information
(see Figure 6):
Digit 1— Type of DEU.
Digit 2— Setting of right-hand rotary switch.
Note: Such information as device address, area station
address, and left-hand rotary switch setting are also
transmitted to the system controller. The system
controller constructs a transaction header from this
information and prefixes it to the transaction containing
the data entry.
Selection Switch
A 10-position rotary switch is located on each side of the
DEU frame. These switches are capable of transmitting
numeric digits 0 through 9 to indicate such things as
status, names, or numbers. The transmitted digits are
Rotary Switches
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