Determine the current factor and the threshold voltage of nMOS and pMOS transistors in CD4069 by fixing VDS to Vcc/2 and varying VGS
Determine the IDS versus VDS for VGS=Vcc/2
Determine Iout versus Vin of the inverter with Vout=Vcc/2
Use a chain of 16 identical resistors from Vcc to ground to generate variable bias voltages