Extended Data Fig. 5: Example of the graphical estimation of the noise margin for the inverter programmed with VPROG = 8.5 V.
From: Logic-in-memory based on an atomically thin semiconductor

Output voltage VOUT as a function of input voltage VIN (blue dots), and its mirror reflection (red dots). VOH and VOL are defined as the points where the slope of the transfer curve (VOUT as a function of VIN, blue dots) is equal to −1, whereas VIL and VIH are the corresponding values of VIN.