How to use "Engineer Notation" (SI Prefixes)?

[Vtile]

There is the EEX key for those, have been since atleast 1970s. Now set your calculator to ENG(ineering) display mode, which looks similar than the scientific mode, but is totally different with the display logic as it follows stricktly the SI-prefix logic.

Engineering logic as the SI-prefixes increment and decrement at the step of 10^3 (E3), except the two first housekeeping prefixes at both sides of zero. Desi, hecto, deca centi (which are skipped in ENG-mode).

Don't cry you need to learn it sooner or later, m = E-3, M=E6 etc.. The prefixes aren't applied to unit itself but the magnitude indicator before the unit, which means your number is just multiplied (or divided) with proper 10^x term (so called prefix.).

Prime does excatly what you are looking for by calculating in engineering mode (of course exponent calculations are universal, but ENG-mode shows results in SI-prefix compliant form).

5E6 * 1E-6 = 5*1*10^(6+(-6)) = 5*10^(0) = 5*1 = 5

Code:


tera     T     1000000000000     10^12   E12 
giga     G     1000000000     10^9   E9
mega M     1000000     10^6   E6
kilo     k     1000     10^3   E3
(none)     (none)     10^0   E0
milli     m     0.001     10^3    E-3
micro μ     0.000001     10^−6    E-6
nano     n     0.000000001     10^−9    E-9
pico     p     0.000000000001     10^−12    E-12

Corrected above calculation example. It were 5e6 * 5e-6, corrected to 5e6 * 1e-6