3. Fig. 3 shows the 74194 is a bidirectional with the functions: (S0S1)=(11) : data loading. (SaSi)=(O1) : shift left with new data entered from SLSER, and (SaSi)=(10) : shift right with new data entered from SR SER. Please design a (mod 14) left-shift Johnson counter by two 74194 and some logic gates (if necessary). You should clearly show how to connect all the pins if these pins are used, e.g., Q0Q1,S0,S1,SRSER, and SLSER.(20%)