nader's lexicon

Byte

comes from the term "bite" as in the smallest amount of data a computer could "bite"

cm

1. unit of length in the metric system
2. 1 cm = 0.01 meters

em

1. general unit for measuring lenghts, for example page margins and paddings
2. technique for writing scalable style sheets
3. One em is often incorrectly said to be equal to the width of a capital "M" in a particular typeface.

m

Metre or meter is the fundamental unit of length in the International System of Units

Siemens

It is named after the German inventor and industrialist Ernst Werner von Siemens, and was previously called the mho