What is one of the key characteristics of the MOS-transistor?

A key characteristic of the MOS (Metal-Oxide-Semiconductor) transistor is its very little power consumption. This property is primarily due to the way MOS transistors are designed; they only draw significant current during the switching process. Once in the on or off state, they consume very little power, making them highly efficient for digital circuits. This efficiency is crucial for battery-operated devices and contributes to the overall performance and longevity of electronic systems.

In contrast, options like high power consumption, large size, and high cost of raw materials do not align with the fundamental attributes of MOS technology. MOS transistors are specifically valued for their low power usage, small size, and cost-effectiveness, especially in large integrated circuits commonly used in a variety of electronics. Understanding these efficiencies helps underscore why MOS technology has become predominant in modern electronic applications.