Other EE annoyances: capacitors are often marked with their capacitance as, say, &quot;100 MFD&quot;.  No, it&#x27;s not megafarad, it&#x27;s not millifarad; it actually means microfarad!  That&#x27;s annoying in several ways, including <i>really</i> abusing the SI prefixes (milli is &quot;m&quot; and mega is &quot;M&quot;) and because the symbol for farad is simply &quot;F&quot;, not &quot;FD&quot;.