Abstract
We have fabricated a microchip of a neural circuit with pulse representation. The neuron output is a voltage pulse train. The synapse is a constant current source whose output is proportional to the duty ratio of neuron output. Membrane potential is charged by collection of synaptic currents through a RC circuit, providing an analog operation similar to the biological neural system. We use a 4-bit SRAM as the memory for synaptic weights. The expected I/O characteristics of the neurons and the synapses were measured experimentally. We have also demonstrated the capability of network operation with the use of synaptic weights, for solving the A/D conversion problem.
Original language | English |
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Pages (from-to) | 94-100 |
Number of pages | 7 |
Journal | IEICE Transactions on Electronics |
Volume | E78-C |
Issue number | 1 |
Publication status | Published - 1995 Jan 1 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering