HP 5004A, Operating And Service Manual

Page: 51 / 74

INPUT. Similar to the S input except if both and K (see below) are at the
flip-flop changes state.
K INPUT. Similar to the R input (see above).
D INPUT (Data). Always dependent on another input (usually C). When the
and D inputs are at the flip-flop will be set. When the
is
and the is
the flip-flop will reset.
Address symbol has multiplexing relationship at inputs and demultiplexing
relationship at outputs.
8-28. Dependency Notation "G"
"V" "F"
8-29. Dependency Notation
is a way to simplify symbols for complex elements by defining
the existence of an AND relationship between inputs, or by the AND conditioning of an output
by an input without actually showing all the elements and interconnections involved. The fol-
lowing examples use the letter
"C" for control and "C" for gate. The dependent input is labeled
with a number that is either prefixed or subscripted
X,).
They both mean the
same thing. The letter V is used to indicate an O R relationship between inputs or between in-
puts and outputs with this letter (V). The letter indicates a connect-disconnect relationship.
the (free dependency) inputs or outputs are active
(1) the other usual normal conditions
apply.
If
one or more of the inputs are inactive the related output i s disconnected from
its normal output condition (it floats).
The input that controls or gates other inputs is labeled with a or a
followed by an identifying number. The controlled or gated input or output is
labeled with the same number. I n this example,
i s controlled by
When the controlled or gated input or output already has a functional lable
i s used here), that label will be prefixed or subscripted by the identifying number.
If a particular device has only one gating or control input then the identifying
number may be eliminated and the relationship shown with a subscript.
If the input or output is affected by more than one gate or control input, then the
identifying numbers of each gate or control input will appear in the prefix or
subscript, separated by commas. In this example i s controlled by
and