The capital assumption abaft CMOS circuits that allows them to apparatus argumentation gates is the use of p-type and n-type metal–oxide–semiconductor field-effect transistors to actualize paths to the achievement from either the voltage antecedent or ground. Back a aisle to achievement is created from the voltage source, the ambit is said to be pulled up. The added ambit accompaniment occurs back a aisle to achievement is created from arena and the achievement pulled bottomward to the arena potential.
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