Electricity meter may be a/an

An electricity meter, specifically the traditional electromechanical induction type, is considered a form of analog computer. These meters operate by measuring continuous physical variables, such as current and voltage, to compute energy consumption. The electromechanical meter functions as an integrator, where a non-magnetic metal disc rotates at a speed proportional to the power passing through it; the total number of revolutions represents the energy used over time. Unlike digital systems that process discrete data, analog computers work with continuous physical values. While modern 'smart meters' utilize electronic circuits and microprocessors for digital pulse signals, the fundamental classification of the classic watt-hour meter, which has been the standard for decades, is an analog device due to its mechanical integration of electrical flow.