HP 35s User Manual page 38

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"
5
following the "E" is the exponent of 10: 1.2346 10 .
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
3
that use units specified in multiples of 10 (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)

3
exponent of 10: 123.46 x 10 .,
@ 2
Pressing or will cause the exponent display for the
number being displayed to change in multiples of 3, with the mantissa adjusted
accordingly.
1-22
Getting Started