| 摘要 |
PURPOSE:To reduce an operational error, while keeping the circuit from becoming complex, by feeding the signals of 2<m> Hx signals from an oscillating frequency dividing circuit to a 10 Hz generating circuit through a gate circuit which does or does not start the counting operation of a stop-watch. CONSTITUTION:The signals of the oscillatory frequency of 2<n>Hz from a quartz oscillator 1 are subjected to frequency division by a frequency dividing circuit 2, and the output signals 13 of 2<m>Hz are fed through a gate circuit 4 to a 10 Hz generating circuit 5. In case this circuit 5 is a system, by which the input pulses are counted to feed one output pulse for a certain number of pulses, if the input is 128 Hz and the output is 10 Hz, this 10 Hz can be generated by the combination, in which the 128 Hz 13 is subjected to frequency division to generate one output pulse for each 12 or 13 pulses. If the switch of a stop-watch counting start of the switch group 10 is turned on, 1 is displayed in the unit of 1/10 second as accurately as possible. |
