[Ed - Because of limited response
concerning circuit boards for
logic comparator I wiU not be
producing them at this time. For
those who stiU intend on building
the comparator, I have a slight
change which wiU cause a little
less confusion when reading the
LED's. This also uses a less
expensive switch. By hooking the
compare circuitry up in the way
shown below, you no longer have
to disregard the readings on the
pins that are input pins. Notice
' - - ---+-'----1,&
.$WITt."
O"C,N a O\Jl9\JT
(1.00'\.0 a ,oJP"'T
~""I.4L~~
"tf'l
L [ D '.
C, kC ",,. .. -t
that the switch is now a S.P. S. T.
instead of a S.P.D. T. When the
switch is in the output position,
the two chips are being com-
pared. When the switch is in the
input position, aU the inputs
(including the 71;86's), are tied
together, this wiU cause the
corresponding LED not to light.
This change, for the better, was
brought to my attention by
Charles Rowland of Richmond,
Virginia. ]
•••••••••••••
AMOA's strength
The question is asked: What
gives AMOA its strength? The
answer is: AMOA has the abiding
interest and informed loyalty of
the operator. AMOA was found-
ed by operators and the bulk of
its membership is made up of
operators, with a strong and
much-appreciated
supporting
membership from other catego-
ries. Its purpose is service to the
operator, and as long as AMOA
serves the operator, it will in
effect serve the whole industry,
and it will prosper.
AMOA membership is open to
all operators regardless of size-
small, medium, large. AMOA is
not oriented toward, nor domi-
nated by, any particular group.
Any operator member, regard-
less of size, who has the will to
work, may be elected to officer
leadership. The small as well as
the large operators feels com-
fortable in the AMOA. Which is
another reason why operators
hold this association, their as-
sociation, in such high regard.
During the past year it has
been my privilege to work closely
with President Garland B. Gar-
rett, Sr., who was once himself a
small operator. For that reason
he is mindful of the operator's
problems, and it was he more
than anyone else who organized
the AMOA mechanics schools
this year, which have served the
operators so well. We all owe
President Garland Garrett a
warm vote of thanks for his
successful efforts on behalf of the
operator and the national associa-
tion.
Frederick M. Granger
Executive Vice President
AMOA
PLAY METER. 19n. November
7