- The
d-r key
not only switches between "degrees" and
"radians" mode, but also converts the number currently in display
from one angle mode to the other. For example, when the
calculator is in "degrees" mode, and the number 180 is displayed,
pressing the
d-r key
will convert the angle to π
degrees. When the calculator is in "radians" mode, the rightmost
dot on the display is lit.
- The
→P and
→R keys
convert between vector modes. The parameters need to be present
as "x" and "y", and can be entered using
x↔y (above the
1/x key).
The results can be read using the same key.
- The
EE↑ key and
EE↓ key
shift left and right in scientific notation. However, when the
number shifts out of display, the number is truncated. This can
not be used to round the number, because no rounding off takes
place.
- The
Σ1 key
is what is nowadays usually denoted by
M+, it adds the number displayed to the first of the two
memories.
- This calculator is particularly inaccurate.
- When pressing a number and then pressing the
yx key,
the natural logarithm of y is shown as an intermediate
result. This is probably due to the fact that the calculator uses
this formula:
yx = e(x · ln y)