86.1.3 Analysis of Block Diagrams The output signals of the four adders are given by WI=X-as 2=W1-8S w3=S1-EW2Y=βW1-yS2 From the figure we observe§6.1.3 Analysis of Block Diagrams • The output signals of the four adders are given by W1= X - S2 W2= W1 - S1 W3= S1 - W2 Y= W1 -  S2 • From the figure we observe S2= z-1 W3 S1= z-1 W2