Digital time display with drive circuit - having stepping frequency of 0.36 seconds for last valid digital display symbol for easier reading and conversion

摘要

The digital time display employs a series of display symbols and a circuit supplying output signals for indexing the display. The circuit for indexing the last valid display symbol provides an indexing frequency of 0.36 seconds. Pref. the time display has two seconds display symbols, two minutes display symbols and at least one hours display symbol, with one of the seconds display symbols indexed with a frequency of 0.36 seconds. The display may employ 1.e.d.'s for providing each display symbol coupled to a counter circuit, supplied with oscillator pulses and using flip-flops.