Abstract: The disclosure relates to an electronic system which includes a microcomputer circuit with a stored program, data storage means, a keyboard, and a display cooperating with a temperature probe assembly to display the temperature along a given path. The apparatus include means for connecting the apparatus to a power source exterior of the apparatus or a battery source so as to be completely portable in operation. The microcomputer, along with various commands in the keyboard input, cooperate with the data storage means to display the temperature in digital or graphical representation and also to provide a recall feature so that prior temperature profiles can be recalled for comparison purposes.