Figure 1: Arithmetic Adder for four 4-bit binary numbers Number A Number B 1's complememt of B B. B. B. 4 bit parallel binary adder C Result of suhtraction

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1. Solve for the Boolean expression of 4-bit binary Adder and 4-bit binary subtractor.

The Block diagram below shows 4-bit binary adder and 4-bit binary subtractor. Notice in
figures Ao and Bo has two input variables.
(MSB)
Az Bz
A B
(LSB)
Ap
Bo
A3 By
4-bit addition:
AB C
AB C
AB C
bit representations
A
В
A3 Az Aj Ag
+ B, B2 Bị Bo
FA
FA
FA
НА
Co
Σ
Co
Σ
C.
Σ
C,
Σ
Figure 1: Arithmetic Adder for four 4-bit binary numbers
Number A
Number B
1's complememt
of B
A.
A.
B.
B.
В.
B.
+V.
4 bit parallel binary adder
Result of subtraction
Figure 12: Arithmetic Subtrator for four 4-bit binary numbers
4,
Transcribed Image Text:The Block diagram below shows 4-bit binary adder and 4-bit binary subtractor. Notice in figures Ao and Bo has two input variables. (MSB) Az Bz A B (LSB) Ap Bo A3 By 4-bit addition: AB C AB C AB C bit representations A В A3 Az Aj Ag + B, B2 Bị Bo FA FA FA НА Co Σ Co Σ C. Σ C, Σ Figure 1: Arithmetic Adder for four 4-bit binary numbers Number A Number B 1's complememt of B A. A. B. B. В. B. +V. 4 bit parallel binary adder Result of subtraction Figure 12: Arithmetic Subtrator for four 4-bit binary numbers 4,
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