The supply voltages of logic circuits go quadratically to the power these circuits consume. The first RTL log
ics required supply voltages of 3.6 V, the TTL and CMOS logics even required 5 V. As the integration density oflogics, processors and RAMs
increased, the power consumption of the chips and RAMs also increased disproportionately. Not least, this increased the amount ofcooling
required. For these reasons, technologies were developed as early as the 1990s that could be operated with lower supply voltages. This Low Voltage
Technology (LVT) operated with 3.3 V, 3.0 V and with 2.7 V. From this LVT technology, Advanced Low Voltage Technology (ALVT) and later Ultra Low Voltage (ULV) with supply voltages of 1.0 V to 1.3 V developed at the end of the 1990s.