IPC Main Group
H03K 21/00 Details of pulse counters or frequency dividers
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRONIC CIRCUITRY
- Subclass:
- PULSE TECHNIQUE
6 direct subcodes
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
- H03K 21/4 Monitoring; Error detection; Preventing or correcting improper counter operation