Thyristor Circuit

Hello,
I’m making a circuit design to measure room or body temperature, I used Arduino Uno to receive the voltage change from the Thyristor when temp changes.
Now, I can easily convert output Thyristor voltage to temp using Steinhart–Hart equation via C++ by Arduino (1/T=A+B ln R+C(Ln R)^3).
My question is: in case I need to use electronics components without using Arduino, what of component design can make the Steinhart–Hart equation including Ln ?
Thank you

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