Q.6 For the circuit in Figure 02 , assume the inputs are Add/Subt. = 1, A =1010, and B = 1101. What is the output?
Q.6 For the circuit in Figure 02 , assume the inputs are Add/Subt. = 1, A =1010, and B = 1101. What is the output?
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Transcribed Image Text:FIGURE 02
Q.6
For the circuit in Figure 02 , assume the inputs are Add/Subt. = 1, A =1010, and B = 1101. What is the output?
The input waveforms in Figure 03 are applied to a 2-bit adder. Determine the waveforms for the sum and the output
carry in relation to the inputs by constructing a timing diagram.
Q.7
A1
A2
B1
B2
Cin
FIGURE 03
Q.8
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.
A1
A2
1010
1100

Transcribed Image Text:For the parallel adder in Figure 01, determine the complete sum by analysis of the logical operation of the
1 0
circuit. Verify your result by longhand addition of the two input numbers.
1 0
Q.4
0 1
1 1
0 1
А В С
A B Cin
A B Cin
A B Cin
А В Ст
Σ
Cout
Σ
Cout
Σ
Cot
Σ
Cout
Σ
Cout
FIGURE 01
The circuit shown in Figure 02 is a 4-bit circuit that can add or subtract numbers in a form used in computers (positive
numbers in true form; negative numbers in complement form). (a) Explain what happens when the Add/Subt. input is
HIGH. (b) What happens when Add/Subt. is LOW?
Q.5
A, Bo
Aj B1
A, B2
Az B3
Add/Subt.
A B Cin
A B Cin
A B Cin
A B Cin
Σ
Cout
Cou
Σ
Cout
Σ
Cout
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