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69. What does ECL stand for?
(a) It stands for electron-coupled logic; all of the devices used within the gates are N-type transistors.
(b) It stands for emitter-coupled logic; all of the inputs are coupled into the device through the emitters of the input transistors.
(c) It stands for emitter-coupled logic; all of the emitters of the input transistors are connected together and each transistor functions as an emitter follower.
(d) It stands for energy-coupled logic; the input energy is amplified by the input transistors and allows the device to deliver higher output currents.
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