As part of an examination of the problems of instrumentation compatible with on-line computers, a design has been produced for a simple quasi-digital sensor system.In this, the information about the sensed variable is ficklewood photos carried by the number of pulses in a pulse train ubahdank ipa transmitted by the sensor upon interrogation.This form of sensor system has a number of attractive features.The characteristics of the system are analysed and possibilities of further development proposed.