A floating gate CMOS Euclidean distance calculator and its application to hand-written digit recognition

Abstract

In this work, a Euclidean distance calculator is presented. The circuit comprises of simple computing blocks, their basic element being the floating gate MOSFET (FGMOS), exploiting the merits of this device in designing circuits with low-voltage and rail-to-rail operation. Therefore the overall circuit has the characteristics of modularity, low-voltage and rail-to-rail operation under a single supply voltage, accuracy and simplicity. The circuit is designed with 2/spl mu/ MIETEC CMOS technology and is used in the simulation of a hand-written digit recognition system using the nearest neighbour classification method. The simulation results presented, demonstrate the functionality of the circuit.