In J. Rabaey, A. Chandrakasan and B. Nikolic, “Digital Integrated Circuits: A
Design Perspective”, second edition, Prentice Hall, NJ, 2003
chapter 5, pag197
"...the overshoots on the simulated output signals. These are caused by the
gate-drain capacitances of the inverter transistors, which couple the
steep voltage step at the input node directly to the output
before the transistors
can even start to react to the changes at the input. These overshoots clearly have a negative impact on the performance of the gate, and explain why the simulated delays are larger than the estimations."
https://en.wikipedia.org/wiki/Overshoot
https://www.merriam-webster.com/dictionary/steep
In electronics, overshoot refers to the
transitory values of any parameter that exceeds its final (
steady state) value during its transition from one value to another. An important application of the term is to the output signal of an amplifier.[3]
Usage: Overshoot occurs when the
transitory values exceed final value. When they are lower than the final value, the phenomenon is called "undershoot" or "negative overshoot".
Undershoot -->voltage below VSS
Overshoot-->voltage above VDD
How do we enable voltages beyond VSS, VDD, result of switching them to output?
Nonlinear Behaviour and transient (not driven, controlled by input)
Voltage-->energy/unit of charge going to reference (lower potencial in the circuit)
unit of charge=1>0C -->positive charge
Conclusion:
CLEARED because naive ERRORs