Railroad track survey apparatus

Railway train control simulator and method

Ramp function generator

Random sample statistical function analyzer

Rate divider

Rate multiplier

Ratio computer

Reactor trip on turbine trip inhibit control system for nuclear

Real time programmable digital register analyser

Real-time cross-correlation signal processor

Real-time multiplier with selectable number of product digits

Receiver equalizer apparatus

Recursive digital filter

Recursive filter implemented as a matched clutter filter

Recursive interpolation

Recursive numerical processor

Reducing power consumption in calculators

Reference signal circuit

Remote diagnostic apparatus

Respiratory biofeedback and performance evaluation system