Computer Scientists’ Trivia
<p><pre><code>    2^10 = Kilo ~ 10^3
    2^20 = Mega ~ 10^6
    2^30 = Giga ~ 10^9
    2^40 = Tera ~ 10^12
</code></pre>
This is wrong - power-of-two magnitudes are called kibi-, mebi-, gibi- and tebibytes.
Kilo, Mega, Giga and Tera are prefixes used by the SI unit system, and denote powers of ten.<p>The confusion comes from Microsoft using power of two numbers in calculations, but SI power of ten prefixes in labels.<p>A kilobyte is 1000 bytes, not 1024 bytes.