Details of pulse counters or frequency dividers

Child Classifications

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• H03K 21/02 Input circuits
• H03K 21/08 Output circuits
• H03K 21/16 Circuits for carrying over pulses between successive decades
• H03K 21/18 Circuits for visual indication of the result
• H03K 21/38 Starting, stopping or resetting the counter (counters with a base other than a power of two H03K23/48, H03K23/66)
• H03K 21/40 Monitoring; Error detection; Preventing or correcting improper counter operation