Asynchronous counter
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United States of America Patent
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May 28, 1991
Grant Date -
N/A
app pub date -
Jun 13, 1989
filing date -
Jun 15, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An asynchronous nonlogical counting device includes at least a first counter and a second counter connected in cascade. The first counter has a frequency dividing ratio of 2.sup.n where n is a natural number. A control unit produces a control signal based on the count value of the first counter. The second counter has a variable frequency dividing ratio which is based on the control signal. The counting device can be made programmable by substituting a comparator circuit for the control unit. The comparator compares the output of the first counter to an instruction signal from an external source.
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Cited Art Landscape
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