JPS55425A - Electric range - Google Patents

Abstract

PURPOSE: To digitally display the left time and cook end time of a timer by interrupting the high frequency oscillations when it reaches the cook end time which is the addition of a set timer time and the present time.

CONSTITUTION: An AND 3 is rendered conductive each time auxiliary time pulse signals H arrive thereby to feed the renewed concent of a watch unit 1 through an OR 6 to a display register 7 which is composed of a circulating type dynamic shift register so that it displays the present time in a display unit 8 such as a fluorescent numeral display tube. The set output of an FF 11, which is set by the operations of a timer indicating key, is fed together with the reset output of an FF 5 under its reset condition through an inverter 4 to close the AND 3 but to open an AND 15 so that the set time of a timer resist 12 is displayed through the OR 6 in the display unit 8. Then, an adder 21 receives the signals 1 upon detection of start signals to add the contents of a watch unit 1 and the register 12 thereby to store the contents in an end time register 22. Thus, the left time and the cook end time of the timer are digitally displayed.

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