Pnpn transistor | Article about pnpn transistor by The Free Dictionary
pnpn transistor[¦pē¦en¦pē¦en tran‚zis·tər]
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Solid-state crosspoint arrays were first fabricated in 1967 although the use of solid-state four-layer devices (a pnpn transistor
switch, for talking-path switching) had been suggested at Bell Labs in 1956.