Loading Datafromacard - HP -67 Owner's Handbook Manual

Card Reader Operations 281
Loading Data from a Card
To load data from a recorded card back into the storage registers,
simply pass the card through the card reader with the W/PRGM-RUN
switch set to RUN. The HP-67 identifies the type of information
(whether data or a program) and automatically placesit into the proper
portion of the calculator. Thus, to load data back into the calculator
from a magnetic card:
1. Ensure that the W/PRGM-RUN switch wrrem I RuN is set
to RUN.
2. Select the magnetic card with data recorded upon it.
3. Pass side 1 of the magnetic card through the card reader.
a. Data from the card has now replaced data in the 16 primary
storage registers of the calculator. In addition, if the secondary
registers contained all zeros when recorded, those zeros replace
the contents of the secondary registers (Rg, through Rgg) of the
calculator. The calculator displays the original contents of the
X-register to indicate that by loading only one side, the card
was loaded correctly.
c. If a second side of the card is required, the calculator
prompts you by displaying .
d. Pass side 2 of the card through the card reader to load
nonzero data into the secondarystorage registers. The calculator
then displays the original contents of the X-register to indicate
that the data card has been loaded completely.
It does not matter which side of the card you record or loadfirst. The
HP-67 recordsthe contents of the primary storage registers on the first
side recorded, and the contents of the secondary storage registers on
the second side. (If all secondary registers contain only zero, the
contents of all storage registers are recorded on the first side.) When
the card is then read later, the data is loaded into the properregisters,
regardless of which side of the data card you first pass through the
reader. However, for ease oflater reference, it is generally best to
record primary registers on side 1 and secondary registers on side 2.
Whenever the calculator indicates , you can clear the
display and return control to the keyboard by pressing
or any key from the keyboard. In this way, you can record only
part ofthe storage registers onto a card or load only part from a card.