Timing apparatus including electronic calculator circuits

Details Timing apparatus including electronic calculator circuits Timing apparatus including electronic calculator circuits

1975-06-16

1977-05-24

Malzahn, David H.

Registers

Transfer mechanism

Traveling pawl

58 23R, G04C 300

Patent

active

040257746

ABSTRACT:
An electronic system employs a calculator as an arithmetic unit and accumulator. A mode switch enables operation as a timer (decrementing from a preset value) or a stopclock (incrementing time). Initial or preset values of time are entered manually through a keyboard in either mode. Sequencing circuitry controls execution of the arithmetic functions of the calculator in proper order and function, depending on the selected mode. The sequencing circuitry also gates the output of an oscillator to provide time increment pulses. A display unit generates a visual display of the accumulated time in both modes. In the timer mode, sensing circuitry senses when a preset time has elapsed and generates an audible signal.

REFERENCES:
patent: 3788058 (1974-01-01), Idei et al.
patent: 3798428 (1974-03-01), Izawa
patent: 3816730 (1974-06-01), Yamamoto
patent: 3822547 (1974-07-01), Fujita
patent: 3854277 (1974-12-01), Samejima
patent: 3867619 (1975-02-01), Arauchi

Affiliated with

Also associated with

Rating

Timing apparatus including electronic calculator circuits does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Timing apparatus including electronic calculator circuits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Timing apparatus including electronic calculator circuits will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-539086