Question

can you multiply the yellow number by 9 then solve

1) ALU Design: Carry-Select Adder UCE Given: A 4-bit adder is implemented in a carry ripple style as shown in the figure below. B3 A3 B2 A2 B1 A1 BOAD -- FA c3 FA c1 FA FA CO='1' $1 SO Sought: Please calculate the output carries for each full adder (FA) using A=0x01 and B=0x04. It is required to show ALL incremental steps of the solution, then record each the final results in the table below. C4 C3 C2 CI

Answer 1

& Given ripple ripple carry Adder B3 A 3 B2 Αν B. AI Bo AO C3 C2 CI Cu. FA F.A F. F. A - Coll S1 So Sz sa & A s.Ox01 > B = Ox04 Multiply A by 9. then A = 0809 B- Ox04 in binary and A B 11001) - Oxoa Ox 04 B = (0100) 2 Bo=0 Aos ! A,= 0; B=0 A2=0; Beal Az = .. B2=0

Step1; Generating carry ci Bo Ao Ci FA Co=1 So are Inputs the full adder Cool and AO i, Bo-0 Truth table Adder Full of Sum Carry А B Carry prevoiour 0 6 o o 0 - o 0 0 o 0 o 0 0 0 0 Coal, For Ao=1 ; Boo and and So=o. We get C, 1

C2 Step 2 Generating carry BI AL C2 с FA H رک Here Ai = 0; Bi=0 and C=1 then C2 = 0 and si=1. carry C3 Generating Step 3: B2 Az j C3 F.A С, k S2 Here A2=0; Bril; (2=0 then C330 and 52=1 Step 4 - C4. Generating carry A3 J cz Cu F.A K . tes 53 Here A3 : 1 ; B320, C3=0; then C4 = 0; 83=1

Carry C4 C3 C2 ci o o Illo Sum= Sz Sz Siso =