I am studying a book related to digital integrated circuits and there is something I cannot understand.
The book starts by explaining two basic building blocks of digital integrated circuits: the inverter and the non-inverter. My question is about the inverter.
It says the above figure is an ideal logic inverter. It operates with a single power source V_cc. The logical 1 output voltage is ideally at the V_cc and the logical 0 output voltage is ideally at the ground. For the inputs, logical input 0 is represented by the voltage range 0<= V_in < (V_cc)/2 and the logical input 1 lies between the range (V_cc)/2 < V_in <= V_cc. After that the following figure is provided.
According to the text, the input can be modelled as a parallel resistance and capacitance, and the output is modelled as resistance in series with a complemented voltage source. My question is that what is a complemented voltage source and how does the above circuit work as an inverter?