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Controlling the Display
However, multiplying again by 10 causes the exponent to shift
to another multiple of three and the decimal point to move to the
units position:
Press
Display
10 [x]
Decimal point shifts. Power of
10 shifts to 1072,
Automatic Display Switching
The HP-25 switches the display from fixed point notation to full
scientific notation (SCI 7) whenever the number is too large or
too small to be seen with a fixed decimal point. This feature
keeps you from missing unexpectedly large or small answers.
For example, if you try to solve (.05)? in normal FIX 2 display,
the answer is automatically shown in scientific notation:
Press
Display
cLX
ENG 0 from previous example.
B (Fx]2
Normal FIX 2 display.
05
3@
Display automatically switched
to SCI 7 to show answer.
Another way of displaying the answer would be 0.000125, but in
normal FIX 2 display, you would have seen only
dis-
played.
After automatically switching from fixed to scientific, when a
new number is keyed in or [§EJ is pressed the display auto-
matically reverts back to the fixed point display originally
selected.
The HP-25 also switches to scientific notation if the answer is
too large (>10'?) for fixed point display. The display will not
switch from fixed if you solve 1582000 x 1842:
Press
Display
1582000
1582000.00
1842
2914044000.
Fixed decimal point display.
However, if you multiply the result by 10, the answer is too
large for fixed point notation, and switches automatically to
scientific notation:
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