HP 35s Scientific Calculator - Manual (Page 38)

1-22 Getting Started
Scientific Format ()
SCI format displays a number in scientific notation (one digit before the "" or ""
radix mark) with up to 11 decimal places and up to three digits in the exponent.
After the prompt, _, type in the number of decimal places to be displayed. For
10 or 11 places, press
 or  . (The mantissa part of the number will
always be less than 10.)
For example, in the number   , the "2", "3", "4", and "6" are the
decimal digits you see when the calculator is set to SCI 4 display mode. The "5"
following the "E" is the exponent of 10: 1.2346
× 10 5 .
If you enter or calculate a number that has more than 12 digits, the additional
precision is not maintained.
Engineering Format ()
ENG format displays a number in a manner similar to scientific notation, except that
the exponent is a multiple of three (there can be up to three digits before the "" or
"" radix mark). This format is most useful for scientific and engineering calculations
that use units specified in multiples of 10
3 (such as micro–, milli–, and kilo–units.)
After the prompt, _, type in the number of digits you want after the first
significant digit. For 10 or 11 places, press
 or  .
For example, in the number   , the "2", "3", "4", and "6" are the
significant digits after the first significant digit you see when the calculator is
set to ENG 4 display mode. The "3" following the "
 " is the (multiple of 3)
exponent of 10: 123.46 x 10 3 .,
Pressing 
@
or 
2
will cause the exponent display for the
number being displayed to change in multiples of 3, with the mantissa adjusted
accordingly.