Editing Acorn Atom Technical Manual (section)

== What it settles ==

* The '''parts list and layout diagrams''' on pages 6&ndash;12 are the source for Atom component designators and values, and for which positions are populated in which configuration — the Atom's expandability means many sockets and positions are empty on any given board.
* Acorn warns in the construction chapter that '''substitute components may be supplied''' where there were supply difficulties, giving "100&nbsp;nF capacitors may replace 47&nbsp;nF parts" as its own example. A board that does not match the parts list exactly is not necessarily modified.
* The manual explains Acorn's '''three-digit capacitor marking''': the first two digits are the first two digits of the value and the third is the number of zeros. This is worth knowing before condemning a part as the wrong value.