resistor-transistor logic

resistor-transistor logic

[ri′zis·tər tran′zis·tər ‚läj·ik]
(electronics)
One of the simplest logic circuits, having several resistors, a transistor, and a diode. Abbreviated RTL.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.