Abstract: The objective of the present invention is to provide a temperature discretization digital device capable of achieving thermalBIT, which controls the characteristic of bifurcation of a temperature solution of a thermoelectric heat equation by adjusting an internal calorific value control parameter such as a current/voltage/thermoelectric property coefficient, so as to cause numbers 0 and 1 to correspond to the numerical range of a temperature solution. To this end, the present invention comprises a thermalBIT solution realizing material having a multi-temperature solution in a medium-sized current or voltage area, controls the characteristic of bifurcation of a temperature solution of a thermoelectric heat equation by adjusting an internal calorific value control parameter; and causes numbers 0 and 1 to correspond to the numerical range of a multi-temperature solution so that thermalBIT is realized.