Abstract: A liquid crystal display device comprises a liquid crystal display unit including a numeral display section and a unit display section, a dynamic driving circuit connected to said liquid crystal display unit to dynamically drive said numeral display section and a static driving circuit connected to said liquid crystal display unit to statically drive said unit display section, wherein numeral information and unit information are simultaneously displayed on said liquid crystal display unit and wherein the difference in contrast levels between the dynamically driven section and the statically driven section indicates when the battery needs replacing.

Abstract: An electronic digital thermometer comprises a pulse oscillator to which a temperature-sensitive resistive element and a temperature-insensitive standard resistive element are alternately coupled as a frequency determining element, a temperature output circuit which is provided with a counter connected to the pulse oscillator and provides a measured temperature value, and a digital display device for displaying the measured temperature value. The temperature output circuit is so arranged that oscillation frequencies of the pulse oscillator respectively produced when the temperature-sensitive resistive element and the standard resistive element are coupled with the pulse oscillator are compared to calculate a measured temperature value.

Abstract: A temperature-measuring apparatus which comprises a first series circuit formed of first and second resistor elements connected between first and second power supply terminals; a second series circuit including a third resistor element connected to the first power supply terminal, a thermosensitive resistor which is connected to the second power supply terminal and whose resistance varies with temperature, a standard resistor having an equal resistance to that which the thermo-sensitive resistor indicates at a referential temperature, and a switching element for connecting the third resistor element selectively to the thermo-sensitive resistor or standard resistor; and analog-digital converter which is impressed with voltage occurring between the junction of the first and second resistor elements and the junction of the third resistor and thermo-sensitive resistor or standard resistor and makes counts corresponding to the measured resistance of the thermo-sensitive resistor and that of the standard resistor;