C3 C2 C1 P Q CI P Q CI P Q CI P Q CI Basic Basic Basic Basic Full Adder Full Adder Full Adder Full Adder co co co co C3 C2 C1

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Solve for the output of the full adder showing Boolean values at all labeled wire locations. Convert to decimal answer.

P=d9

Q=d5

CI=d1

The diagram illustrates a 4-bit Ripple Carry Adder using four Basic Full Adder modules. Each module has inputs labeled P, Q, and CI (Carry In) and produces outputs CO (Carry Out) and S (Sum). 

- **Full Adder 1**: Inputs are P0, Q0, CI. Outputs are CO (C1) and S (S0).
- **Full Adder 2**: Inputs are P1, Q1, and the carry (C1) from the previous adder. Outputs are CO (C2) and S (S1).
- **Full Adder 3**: Inputs are P2, Q2, and the carry (C2) from the previous adder. Outputs are CO (C3) and S (S2).
- **Full Adder 4**: Inputs are P3, Q3, and the carry (C3) from the previous adder. Outputs are CO and S (S3).

The carry output (CO) from each full adder is connected to the carry input (CI) of the next full adder. The Sum outputs (S0-S3) provide the final result of the multi-bit addition. This configuration allows for the cascading of carry bits through the adder chain, effectively summing four pairs of bits.
Transcribed Image Text:The diagram illustrates a 4-bit Ripple Carry Adder using four Basic Full Adder modules. Each module has inputs labeled P, Q, and CI (Carry In) and produces outputs CO (Carry Out) and S (Sum). - **Full Adder 1**: Inputs are P0, Q0, CI. Outputs are CO (C1) and S (S0). - **Full Adder 2**: Inputs are P1, Q1, and the carry (C1) from the previous adder. Outputs are CO (C2) and S (S1). - **Full Adder 3**: Inputs are P2, Q2, and the carry (C2) from the previous adder. Outputs are CO (C3) and S (S2). - **Full Adder 4**: Inputs are P3, Q3, and the carry (C3) from the previous adder. Outputs are CO and S (S3). The carry output (CO) from each full adder is connected to the carry input (CI) of the next full adder. The Sum outputs (S0-S3) provide the final result of the multi-bit addition. This configuration allows for the cascading of carry bits through the adder chain, effectively summing four pairs of bits.
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