- CPC
- H03K23/00

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H03K23/001using elements not covered by groups H03K23/002 and H03K23/74 - H03K23/84
H03K23/002using semiconductor devices
H03K23/004Counters counting in a non-natural counting order
H03K23/005using minimum change code
H03K23/007using excess three code
H03K23/008using biquinary code
H03K23/40Gating or clocking signals applied to all stages
H03K23/42Out-of-phase gating or clocking signals applied to counter stages
H03K23/425using bistables
H03K23/44using field-effect transistors
H03K23/46using charge transfer devices
H03K23/48with a base or radix other than a power of two
H03K23/483with a base which is an odd number
H03K23/486with a base which is a non-integer
H03K23/50using bi-stable regenerative trigger circuits
H03K23/502with a base or a radix other than a power of two
H03K23/505with a base which is an odd number
H03K23/507with a base which is a non-integer
H03K23/52using field-effect transistors
H03K23/54Ring counters
H03K23/542with crossed-couplings
H03K23/544with a base which is an odd number
H03K23/546with a base which is a non-integer
H03K23/548Reversible counters
H03K23/56Reversible counters
H03K23/58Gating or clocking signals not applied to all stages
H03K23/582with a base or a radix different of a power of two
H03K23/584with a base which is an odd number
H03K23/586with a base which is a non-integer
H03K23/588Combination of a synchronous and an asynchronous counter
H03K23/60with field-effect transistors
H03K23/62reversible
H03K23/64with a base or radix other than a power of two
H03K23/66with a variable counting base
H03K23/662by adding or suppressing pulses
H03K23/665by presetting
H03K23/667by switching the base during a counting cycle
H03K23/68with a base which is a non-integer
H03K23/70with a base which is an odd number
H03K23/72Decade counters
H03K23/74using relays
H03K23/76using magnetic cores or ferro-electric capacitors
H03K23/763using superconductive devices
H03K23/766using thin-film devices
H03K23/78using opto-electronic devices
H03K23/80using semiconductor devices having only two electrodes
H03K23/82using gas-filled tubes
H03K23/825using vacuum tubes
H03K23/84using thyristors or unijunction transistors
H03K23/86reversible