HP HP-67 - Page 79

Storing and Recalling Numbers 75
With results from previous examples intact, when you pressed in
the above example, the contents of all numbered storage registers
were exchanged.
So the contents of the storage registers changed...
...from this... ...to this.
Primary Registers Primary Registers
1 3785 1 (3785
R[G8 A
Aol R
R0 .
R [3.6240400000 R
A
R
Secondary Secondary
Registers
When you press (Fx5), the contents of each number-addressed
primary storage register are exchanged with its opposite-numbered
secondary storage register. Thus, in order to bring out the numbers
that are now in the secondary storage registers, you must use the
a keys followed by the key and the number key of the
register address. For example, to recall the number of persons cartied
daily by the Japanese National Railway, you cannot merely press
5 now, since the number in primary storage register R; is 0.00:
Press Display
o 5