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Card Reader Operations
11
Marking Cards
So that you will not mix up your program and data cards, it is a good
idea to identify the contents of a card by marking the card. As you read
on in this handbook, you will see how marking cards is important and
how the different cards can be marked so they may be easily used and
cataloged.
Program Cards:
Program name, subroutine names, version
number or date.
Data Cards:
''Data,'' program name, version number or
date.
Status Cards:
*'Status,'" program name, version number
or date, track number.
""Write-All'" Cards: *"WALL,'' program name, version number
or date.
You can write on the face of a card using any writing implement that does
not emboss the card. Permanent ink marking pens (such as Schwan
Stabilo, Pilot Fine Point Permanent, Sanford Sharpie, and others),
pencils (0.5 mm lead for ''film'' using a 0.5 mm mechanical pencil
works well), and capillary pens using permanent ink for film (pens such
as Castell, or Koh-I-Noor) will work for marking on cards. Most of the
inks must be allowed to dry for a few seconds and pencil may smear.
Pencil, however, is erasable from the cards.
Program Card Operations
Even though programs that you key into the HP-41C are preserved by the
calculator's Continuous Memory (even while the HP-41C is turned off),
you can conserve program memory and save a program permanently by
writing it onto a magnetic card using the card reader.
Writing a Program Onto a Card
Following is the procedure for writing a program onto a card.
1. Set the HP-41C to PRGM mode (press (prgm)).
2.
Select a blank, unprotected (unclipped) magnetic card from the
packet of blank cards included with your HP 82104A Card
Reader.
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