Flip-flops Chapter4 Transformation between different flip-flops
Flip-flops Chapter4 Transformation between different flip-flops
a Add the certain combinational logic circuit to the input of the original flip flop New Original excitation Converting circuit input flip-flop New flip-flop
◼ Add the certain combinational logic circuit to the input of the original flipflop Original flip-flop Converting circuit Q’ Q New flip-flop New excitation input
Simultaneous characteristic equation X Q Converting Original circuit flip-flop converted flip-flop
Simultaneous characteristic equation Original flip-flop Converting circuit Q’ Q converted flip-flop X, Q Y
a y=F X, Q a x be the input variable set of the new flip-flop ay be the input variable set of the original flip-flop Q be the present-state of the original flip-flop X, Q Converting Original circuit flip-flop Q converted flip-flop
◼ Yi=Fi (X,Q) X be the input variable set of the new flip-flop Y be the input variable set of the original flip-flop Q be the present-state of the original flip-flop Original flip-flop Converting circuit Q’ Q converted flip-flop X, Q Y
Convert JK to D,T Rs JK>>D Q 口J=f1(DQ),K=f2(DQ) 口Qm+1=D=DQ+DQ C Q Qn+l=JQ,+K'Q K 口J=D,K=D ■JK>T 口J=f1(TQ),K=f2(TQ) C a Qn+=TQ+TQ Q 口Qn+1=JQ+kQ K 口J=T,K=T
Convert JK to D, T, RS ◼ JK >> D J=f1(D,Q), K=f2(D,Q) Qn+1=D=DQ’+D’Q Qn+1=JQ’+K’Q J=D, K=D’ ◼ JK >> T J=f1(T,Q), K=f2(T,Q) Qn+1=TQ’+T’Q Qn+1=JQ’+K’Q J=T, K=T JK Q’ C Q D JK Q’ C Q T