IBM 80 User Manual

MULTIPLE COLUMN SelECTION DEVICE
69
If the zero eliminate control tube has been fired and
the units brush
senses a 0, 11 or 12 in the card, the card
will sort into the pocket corresponding
to the value of
the punching sensed.
If, however, the units column is
blank and the zero-eliminate control tube has been
fired, the card will sort into the 12 pocket under the
control of commutator
3.
Circuit Cutout Relay
The circuit cutout relay is controlled by an inter-
lock contact on the multiple column brush unit and a
microswitch which
is operated by the plastic cover over
the control panel. This relay
is de-energized when the
control panel cover
is raised or when the multiple brush
assembly
is not properly mounted in its reading posi-
tion or on its holder near the control panel. De-energiza-
tion of this relay opens the machine circuits to prevent
the operator from receiving a shock when handling the
multiple column brush unit or the control panel wires.

IBM 80 Specifications

General

Brand	IBM
Model	80
Category	Office Equipment
Language	English