Combined thermometer and calculator

Details Combined thermometer and calculator Combined thermometer and calculator

1982-07-21

1985-01-15

Myracle, Jerry W.

Thermal measuring and testing

Temperature measurement

By electrical or magnetic heat sensor

374170, 377 25, 331 66, G01K 700

Patent

active

044935650

ABSTRACT:
This invention relates to a thermometry device which measures temperature using an electronic calculator system. The device includes a resistor whose resistance value varies depending upon temperature, an oscillator providing a wave-form oscillating at a frequency which is dependent upon temperature, a clock generator providing reference clock pulses and a counter for counting the clock pulses within a length of time as defined by the frequency of the waveform divided by a factor. Temperature-related information is obtained from the results of the counting.

REFERENCES:
patent: 3828338 (1974-08-01), Rekai
patent: 4125871 (1978-11-01), Martin
patent: 4150573 (1979-04-01), Iinuma et al.
patent: 4206646 (1980-06-01), Spellman et al.
patent: 4359285 (1982-11-01), Washburn
Thermometer Update; "Type 2572 Digital Thermometer: A Wide Temperature Range is Featured", JEE, 10-1977, pp. 31-34, Yoshio Oguma.
Programming Microprocessors, M. W. McMullan, 3-1977, pp. 154-157.

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