| 摘要 |
An electronic clock in which a time can be set securely and quickly at a stable rate with favourable operability. The electronic clock is provided with an input time counting means (103) for counting a time during which an input control means (102) detects a continuous input signal sent from a switch (211) by using clock signals generated by a frequency divider (101) for dividing down the frequency of a source oscillator (106), an input time detecting means (104) for detecting the fact that a value obtained by this input time counting means (103) reaches a predetermined value, and a setting increment/decrement control means (105) for varying a setting increment or decrement (in units of a unit time, e.g. one minute) to be added to or subtracted from a currently set value of time every period corresponding to a clock signal generated by the frequency divider (101). Further, this electronic clock is constructed in such a manner that the increment or decrement is increased or decreased at a rate of 2<n> (n = 1, 2, 3, ...) if the input signal is continuously input from the switch. Moreover, this electronic clock may be further provided with a setting-digit selecting means (705) for selecting a time-setting digit, at which a time is set, according to an output of the input time detecting means (703). <IMAGE> |
