Electronic interface device between a sensor and a display unit

An electronic interface device for use between a sensor detecting a physical magnitude and providing an analog output signal representative thereof and a display unit for displaying a value of said physical magnitude, said interface device comprising:

• a clock means for providing at least a first clock signal;
• a controllable generator for providing an analog output signal to control said display unit in accordance with a signal supplied thereto representative of a value to be displayed, said controllable generator having a control input for controlling an increase and decrease in said analog output signal thereof;
• a first up-down counter for receiving and counting said first clock signal and for providing a binary sign output signal to said control input of said generator;
• and
• an analog amplitude comparator for comparing said analog output signal of said generator with said analog output signal of said sensor and for providing an output signal which control the direction of up and down counting of said first clock signal by said first up-down counter.