This process is known as cascading. Notice that, in this case, the output carry isdesignated Cg because it is generated from the eighth bit position. The low-order adder isthe one that adds the lower or less significant four bits in the numbers, and the high-orderadder is the one that adds the higher or more significant four bits in the 8-bit numbers.Similarly, four 4-bit adders can be cascaded to handle two 16-bit numbers.Bg B, B3 B3 Ag A, Ag AsB, B, B, B A A3 A, ACo4 3 2 1 4 3 2 1 G4 3 24 3 2 1 CnBACqut4 3 2Cat4 3 2 1E E, Eg EsΣ, Σ Σ. ΣCascading of two 4-bit adders to form an 8-bit adder.DISCUSSIONQ.1Show that the output carry in a full adder circuit can be expressed as.Q.2What do you understand by Parallel Adder ?Q.3What is the. No. IC for parallel Adder ?Q.4How many bits can be added by 7483Q.5 The inputs to a full adder are A 1, B 0, Cin = 1. The outputs are( a) Σ-0, Cou1 (b) Σ = 1, Cou-0(C)Σ-0, Cou-0 (d) Σ-1, Cout 1Q.6 What A 3-bit parallel adder can add?Q.7 The following sequences of bits (right-most bit first) appear on the inputs to a 4-bitparallel adder. Determine the resulting sequence of bits on each sum output.Al 1010A2 1100A3 0101solve Q7A4 1101B1 1001B2 1011B3 0000B4 0001

Answered: Image /qna-images/answer/6d34b348-de2b-4996-93e5-48903030a610.jpg

Q.7 The following sequences of bits (right-most bit first) appear on the inputs to a 4-bit parallel adder. Determine the resulting sequence of bits on each sum output. Al 1010 A2 1100 A3 0101 solve Q7 A4 1101 S B1 1001 B2 1011 B3 0000 B4 0001

Q.7 The following sequences of bits (right-most bit first) appear on the inputs to a 4-bit parallel adder. Determine the resulting sequence of bits on each sum output. Al 1010 A2 1100 A3 0101 solve Q7 A4 1101 S B1 1001 B2 1011 B3 0000 B4 0001

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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Question

This process is known as cascading. Notice that, in this case, the output carry is
designated Cg because it is generated from the eighth bit position. The low-order adder is
the one that adds the lower or less significant four bits in the numbers, and the high-order
adder is the one that adds the higher or more significant four bits in the 8-bit numbers.
Similarly, four 4-bit adders can be cascaded to handle two 16-bit numbers.
Bg B, B3 B3 Ag A, Ag As
B, B, B, B A A3 A, A
Co
4 3 2 1 4 3 2 1 G
4 3 2
4 3 2 1 Cn
B
A
Cqut
4 3 2
Cat
4 3 2 1
E E, Eg Es
Σ, Σ Σ. Σ
Cascading of two 4-bit adders to form an 8-bit adder.
DISCUSSION
Q.1Show that the output carry in a full adder circuit can be expressed as.
Q.2What do you understand by Parallel Adder ?
Q.3What is the. No. IC for parallel Adder ?
Q.4How many bits can be added by 7483
Q.5 The inputs to a full adder are A 1, B 0, Cin = 1. The outputs are
( a) Σ-0, Cou1 (b) Σ = 1, Cou-0
(C)Σ-0, Cou-0 (d) Σ-1, Cout 1
Q.6 What A 3-bit parallel adder can add?
Q.7 The following sequences of bits (right-most bit first) appear on the inputs to a 4-bit
parallel adder. Determine the resulting sequence of bits on each sum output.
Al 1010
A2 1100
A3 0101
solve Q7
A4 1101
B1 1001
B2 1011
B3 0000
B4 0001

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