  In this article, we first point out a missing active-device while providing
its theoretical definition and impact on electronics. This type of active
devices has an inverse functionality of transistors, and is suggested to be
called trancitor rather than transistor because it directly transfers an input
signal into a voltage output. It is expected that a trancitor coupled with a
transistor can provide a minimal circuit configuration, i.e., low circuit
complexity, helping virtually to meet the Moore's law. And this may also lead
to a lower power-consumption and higher speed of circuits compared to a
transistor-only circuit. These are supported with a circuit simulation and
simple Tetris-like block analysis. In this regards, in the future, it should be
required to find a trancitor to be another foundation of electronics along with
transistors.
