US PATENT SUBCLASS 377 / 118
PULSE COUNTING OR DIVIDING CHAINS

Current as of: June, 1999
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377 /   HD   ELECTRICAL PULSE COUNTERS, PULSE DIVIDERS, OR SHIFT REGISTERS: CIRCUITS AND SYSTEMS

118PULSE COUNTING OR DIVIDING CHAINS {4}
119  DF  .~> Using bistable regenerative trigger circuits {3}
126  DF  .~> Ring or reversible counter
127  DF  .~> Using bistable semiconductors having at least three electrodes or analogous complementary transistor circuits (e.g., avalanche transistor, SCR's)
128  DF  .~> Using bistable semiconductors having only two electrodes (e.g., tunnel diode, multilayer diode)

DEFINITION

Classification: 377/118

PULSE COUNTING OR DIVIDING CHAINS:

(under the class definition) Subject matter comprising a plurality of stages and connected in a serial arrangement such that the state of one stage is a function of the state of an adjacent stage.

SEE OR SEARCH THIS CLASS, SUBCLASS:

27+, for systems using one or more counter or divider chains.

57+, for charge transfer device-type counting and dividing chains.

83, for chains using relays.

101, for chains using magnetic cores or ferroelectric capacitors.

102, for chains using electro-optical devices. 103, for chains using gas filled tubes.

108, for counter chains with radix or base other than the number two raised to an integral power.