Digital menstrual cycle indicator

Details Digital menstrual cycle indicator Digital menstrual cycle indicator

1982-12-27

1985-07-09

Roskoski, Bernard

Horology: time measuring systems or devices

Time interval

Electrical or electromechanical

368108, 368 89, 368 28, G04F 800

Patent

active

045279063

ABSTRACT:
Disclosed is a digital menstrual cycle indicator for indicating the fertile portion of a woman's menstrual cycle. A standard watch module that can be continuously operated in a certain adjust mode, has a multidigit display and a clock pulse source, so the module serves as an inexpensive display and clock pulse source. A divider circuit is used to divide the output of the clock pulse source and increment the multidigit display by "1" once each twenty-four hours, after the module has been forced into the adjust mode. A hidden switch is used to force the module into the adjust mode, clear the divider and clear the display. Failsafe circuits are included to prevent the erroneous display of data due to a weak battery or an interruption of the power or ground buses.

REFERENCES:
patent: 4240153 (1980-12-01), Merritt
patent: 4244126 (1981-01-01), James
patent: 4316276 (1982-02-01), Koehler et al.

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