
Preface
Electronics has been my profession for well over a
quarter of a century and my hobby for even longer.
Over that whole period, I have been an avid
collector of knowledge of the subject, so that by
now my card index system contains references to
hundreds of articles published during that time.
Now references are all very well, but one often
needs information in a hurry, so it has been my
practice, more often than not, also to save the
article
itself.
Thus I now have, stored in many
bulging files, an invaluable hoard of articles,
photocopies and originals, from dozens of maga-
zines,
books and learned journals. For some years
the feelin ...