’clock’method

18 o’clock statistic of the railway station

absolute clock

access of synchronous clock

active high clock

active low clock

airborne clock

alarm clock

alarm clock movement

All optical clock extraction

all optical clock recovery

all round the clock

All-Optical Clock Recovery

all-optical packet clock recovery

all-optical synchronization clock extraction

ammonia maser clock

Analogue Clock

analyzer for the clock error

and Clock Period Minimization

and Time display slave clock