An inputoutput circuit operable in input and output modes and including an inputoutput terminal, pull-up and pull-down output transistors, and first and second logic circuits operated in accordance with data and an enable signal. The polyvinyl acetic acid or polyvinyl alcohol layer and the carrier layer each have a protruding portion for guidance in printing. Upon power-up, the data from the non-volatile memory are transferred to a comparator in the memory controller. Optionally, nutritional supplements or medicines may be added to the infused liquid. Shaving systems including such shaving assemblies are also disclosed, as are methods of using such shaving systems.