Full Title

Producing timing pulses (driving circuits for stepping motors G04C3/14; producing preselected time intervals for use as timing standards G04F5/00; pulse technique in general H03K; control, synchronisation, or stabilisation of generators in general H03L) > Circuits for deriving low frequency timing pulses from pulses of higher frequency (pulse frequency dividers in general H03K23/00 - H03K29/00)