Operator Controls - IBM 1800 Operating Procedures Manual

The IBM 1055 Paper Tape Punch provides paper tape
output fo r the 1800 system . The 1055 (maximum of one
per system) operates under direct control of the stored
program and punches I-inch , eight-track chad paper tape
(holes completel y punched). The punching speed is 14.8
characters per second.
Paper tape punching is initiated by a write command
issued to the 1055. The write command causes the data
in the main storage location specified by the command to
be punched into the paper tape. The tape is then moved
one character position.
Characters are punched in the paper tape as an image of
the data contained in main storage locations. One tape
character is punched from each main storage location .
OPERATOR CONTROLS (Figure 9)
Figure 9. 1055 Operator Controls
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IBM 1800 Operating Procedures
The Delete Key is used to advance the tape by punching
a delete character and a feed hole. Delete characters are
punched continuously by pressing and holding DELETE
and FEED.
The Feed Key is used to advance the tape by punching
feed holes. Feed holes are continuously punched by
holding FEED down.
The Advance Wheel permits the tape to be moved forward
or backward without punching. If the tape is moved forward,
exercise care since no feed holes are punched with this
operation.
The Tape Tension Lever actuates a switch which signals a
not ready condition if too much tension is placed on the
tape as it feeds from the tape supply pan.
The Tape Presence Contact signals a not ready condition
when the punch runs out of tape.
The Tape Pressure Lever holds the tape against the feed
wheel to ensure proper feeding . During tape punching ,
this lever is in the down position (active). When tape is
being inserted , this lever must be raised until the tape is
properly positioned , then lowered. While in the raised
position , a not ready condition is signalled to the processor-
con troller.