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MM circuit example - the other objects

We go on to describe an inverter, that subtracts its input from 1 at each step.

object amplifier
    attributes
        input : real
        output: real
    where
        output[t] = 5*input[t].

object amplifier_with_feedback is_a amplifier
    where
        input[0] = 1 &
        (t>0) input[t] = output[t-1].

object inverter
    attributes
        input : real
        output: real
    where
        output[t] = input[t]-1.


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