% -*- Mode:Text -*- 
% tt 12-27-94				DATA SHEETS

\chapter*{Preface}


This manual gathers in one place data sheets for off-the-shelf commercial
components (semiconductors, connectors and sockets, mechanical hardware,
etc.) used in a \step\ unit. Custom components are described in
the \FR.

The data sheets are provided as a courtesy to \step\ users, developers, and
documenters, as well as to the components' manufacturers.  Where the
manufaturer's consent was not explicitly obtained, we presume implicit
consent and encouragement for this policy. Most of the sheets are
culled from data books bearing copyrights and disclaimers; distribution and
use of the data sheets is subject to the understanding that such copyrights
and disclaimers remain in force even if when they do not appear on the
individual data sheets.

\medskip

The data sheets appear, as listed in the Contents, in alphabetical order by
manufacturer and by part number under each manufacturer.  For convenience,
manufacturer and part number are repeated as, respectively, major and minor
header on each page; page numbering starts afresh with each part.

Thus, the header
 $$
\hbox to\linewidth{\null\hfill{\sl Motorola}\hfill{\tt MC88915}\quad[3]}
 $$
 denotes page 3 of the data sheets for the device \ttt{MC88915}
made by \tsl{Motorola}.
