A non-crystalline silicon - preferably a-Si:H - (28) active device for use in a large-scale hardware implementation of an artificial neural network system having an analog and digital mixed morphology. A plurality of a a-Si:H (28) thin-film transistors (TFTs) implement addition, multiplication and weighting functionality and are arranged in a highly-connected morphology with other active and passive semiconductor elements. Electrical signals are selectively applied to metal plates (31) and light-emitting devices (33) in order to locally or globally alter the threshold characteristics of the TFTs.
NON-CRYSTALLINE SILICON ACTIVE DEVICE FOR LARGE-SCALE DIGITAL AND ANALOG NETWORKS