MEMORY CIRCUIT, MEMORY UNIT, AND SIGNAL PROCESSING CIRCUIT

摘要

PURPOSE: A memory circuit, a memory device, and a signal processing circuit are provided to reduce power consumption by adopting a normally-off driving method. CONSTITUTION: An output terminal of a first operation circuit(221) is electrically connected to an input terminal of a second operation circuit(222). The input terminal of the second operation circuit is electrically connected to an output terminal of a third operation circuit through a switch(224). An output terminal of the second operation circuit is electrically connected to an input terminal of the first operation circuit. The input terminal of the first operation circuit is electrically connected to a source or drain of a transistor.