HP HP-20S - Interchanging the Period and Comma

To specify engineering notation:
1. Press (-] [ENG].
2. Enter the number of significant digits that you wish to appear
after the first digit.
Entering Numbers With Exponents (E). Regardless of the current
display format, you can always enter a number as a mantissa fol-
lowed by an exponent:
1. Enter the mantissa. If the mantissa is negative, use to change
the sign.
2. Press [w] (or (=] (E]) to start the exponent.
3. If the exponent is negative, press or (-].
4. Enter the exponent.
Calculate 4.78 x 1013 = 8 x 1025;
Keys: Display: Description:
4.78 (- (E] 13 (] 4.7800E13
8 (4] (E] 25 [=] 5.9750E—13 5.975 x 1013,
Calculate —2.36 x 10~1°> x 12:
2.36 () (] (E) F4) 15 —2.832 x 10714,
[x) 12 (=] —2.8320E—14
Interchanging the Period and Comma
You can interchange the period and comma used as the
decimal point and digit separator. For example, one mil-
lion can be displayed:
1,000,000.0000 or 1.000.000,0000
To toggle between the period and comma, press (®][-/5].
1: Getting Started 19