Appeal No. 95-3498
Application 08/176,330
Appellants argue on pages 4 through 6 of the brief that
there is not the slightest suggestion in either Shah or the
admitted prior art that either the Shah I/O boards or the
process
controller boards be modified to incorporate a single I/O
circuit, as recited in claim 8. Appellants argue that Shah
teaches a number of different types of I/O boards each of
which has a different type of controller disposed thereon and
that the admitted prior art teaches a conventional process
controller having a number of internal slots into which a
number of I/O boards having a fixed number of I/O circuits may
be inserted. Appellants argue that the prior art does not
suggest a process controller having a number of internal slots
into which a number of I/O boards each having a single I/O
circuit may be inserted as recited in Appellants' claim 8. In
the reply brief, Appellants agree that Shah suggests to those
skilled in the art to use analog-to-digital interfaces but
argue that Shah does not suggest providing a single I/O
circuit of the four specific types as recited in Appellants'
3
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