HP HP-67 - Page 295

Card Reader Operations 291
When you stored an address of 15 in the I-register, pressed [ (MERGE],
and passed a magnetic card containing data through the card reader:
Primary Registers
I 12
o —
R[] 23
o —
D —
R 20
0
&
O
=
N
WwdhH
OOy
O
Secondary Registers
The contents of these
registers remained intact.
The contents of these
registers were replaced
by data from the magnetic
card.
If you do not wish to load or record data when the calculator displays
, you can press any key to return the contents of the
X-register to the display, then continue with your calculations. This
allows you to load only the primary or only the secondary registers
from a card without pressing £l
As soon as you have finished loading data or pressed any key from
Fhe keyboard, the €} function is forgotten. You must press
1t each time just before you merge data.