Digital Fundamentals (11th Edition)
11th Edition
ISBN: 9780132737968
Author: Thomas L. Floyd
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 1TFQ
The decimal number system is a weighted system with ten digits.
Expert Solution & Answer
Program Plan Intro
To state whether the given statement is true/false.
Program Description Answer
True.
Explanation of Solution
Given Statement-
The decimal system is a weighted system with ten digits.
Explanation:
There are total of ten digits in the decimal system from 0, 1, 2 ...and so on up to 9.
For whole numbers, the weights are positive powers of ten that increase from right to left as follows-
For fractional numbers, the weights are negative powers of ten that decrease from left to right as follows-
Therefore, the given statement is true .
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Whentheuserenters!!,themostrecentcommandinthehistoryisexecuted.In the example above, if the user entered the command:
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The ‘ls -l’ command should be executed and echoed on user’s screen. The command should also be placed in the history buffer as the next command.
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Activity No.
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Immediate Predecessors
1
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3
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4
1
3
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3
2
4
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3
2
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c. Using the information from part b, prepare a network diagram. Identify the critical path.
2. UNIX Shell and History Feature [20 points]
This question consists of designing a C program to serve as a shell interface that
accepts user commands and then executes each command in a separate process. A
shell interface gives the user a prompt, after which the next command is entered.
The example below illustrates the prompt osh> and the user's next command:
cat prog.c. The UNIX/Linux cat command displays the contents of the file
prog.c on the terminal using the UNIX/Linux cat command and your program
needs to do the same.
osh> cat prog.c
The above can be achieved by running your shell interface as a parent process.
Every time a command is entered, you create a child process by using fork(),
which then executes the user's command using one of the system calls in the
exec() family (as described in Chapter 3). A C program that provides the general
operations of a command-line shell can be seen below.
#include
#include
#define MAX LINE 80 /* The maximum length command */
{
int…
Chapter 2 Solutions
Digital Fundamentals (11th Edition)
Ch. 2.1 - Prob. 1CUCh. 2.1 - Prob. 2CUCh. 2.2 - Prob. 1CUCh. 2.2 - Prob. 2CUCh. 2.2 - Prob. 3CUCh. 2.3 - Prob. 1CUCh. 2.3 - Prob. 2CUCh. 2.4 - Prob. 1CUCh. 2.4 - Prob. 2CUCh. 2.4 - Prob. 3CU
Ch. 2.5 - Prob. 1CUCh. 2.5 - Prob. 2CUCh. 2.6 - Prob. 1CUCh. 2.6 - Prob. 2CUCh. 2.6 - Prob. 3CUCh. 2.6 - Prob. 4CUCh. 2.7 - Prob. 1CUCh. 2.7 - Prob. 2CUCh. 2.7 - Prob. 3CUCh. 2.7 - What is the sign of the product when two negative...Ch. 2.7 - Prob. 5CUCh. 2.7 - What is the sign of the quotient when a positive...Ch. 2.7 - Prob. 7CUCh. 2.8 - Prob. 1CUCh. 2.8 - Prob. 2CUCh. 2.8 - Prob. 3CUCh. 2.8 - Prob. 4CUCh. 2.8 - Prob. 5CUCh. 2.8 - Prob. 6CUCh. 2.9 - Prob. 1CUCh. 2.9 - Prob. 2CUCh. 2.9 - Prob. 3CUCh. 2.9 - Prob. 4CUCh. 2.10 - What is the binary weight of each 1 in the...Ch. 2.10 - Convert the following decimal numbers to BCD 6 15...Ch. 2.10 - Prob. 3CUCh. 2.10 - Prob. 4CUCh. 2.11 - Prob. 1CUCh. 2.11 - Prob. 2CUCh. 2.11 - Prob. 3CUCh. 2.12 - Prob. 1CUCh. 2.12 - Prob. 2CUCh. 2.12 - Prob. 3CUCh. 2.12 - Prob. 4CUCh. 2.12 - Prob. 5CUCh. 2 - The decimal number system is a weighted system...Ch. 2 - Prob. 2TFQCh. 2 - Prob. 3TFQCh. 2 - Prob. 4TFQCh. 2 - Prob. 5TFQCh. 2 - Prob. 6TFQCh. 2 - Prob. 7TFQCh. 2 - The hexadecimal number system has 16 characters,...Ch. 2 - BCD stands for binary coded decimalCh. 2 - Prob. 10TFQCh. 2 - Prob. 11TFQCh. 2 - Prob. 12TFQCh. 2 - Prob. 1STCh. 2 - Prob. 2STCh. 2 - Prob. 3STCh. 2 - The decimal number 17 is equal to the binary...Ch. 2 - The decimal number 175 is equal to the binary...Ch. 2 - Prob. 6STCh. 2 - Prob. 7STCh. 2 - Prob. 8STCh. 2 - Prob. 9STCh. 2 - Prob. 10STCh. 2 - Prob. 11STCh. 2 - Prob. 12STCh. 2 - Prob. 13STCh. 2 - Prob. 14STCh. 2 - Prob. 15STCh. 2 - Prob. 16STCh. 2 - Prob. 17STCh. 2 - Prob. 18STCh. 2 - Prob. 19STCh. 2 - Prob. 20STCh. 2 - Prob. 1PCh. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - How high can you count with four decimal digits?Ch. 2 - Prob. 5PCh. 2 - Prob. 6PCh. 2 - Prob. 7PCh. 2 - What is the highest decimal number that can be...Ch. 2 - Prob. 9PCh. 2 - Prob. 10PCh. 2 - Prob. 11PCh. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - Prob. 14PCh. 2 - Prob. 15PCh. 2 - Prob. 16PCh. 2 - Prob. 17PCh. 2 - Prob. 18PCh. 2 - Prob. 19PCh. 2 - Prob. 20PCh. 2 - Prob. 21PCh. 2 - Prob. 22PCh. 2 - Prob. 23PCh. 2 - Prob. 24PCh. 2 - Prob. 25PCh. 2 - Prob. 26PCh. 2 - Prob. 27PCh. 2 - Prob. 28PCh. 2 - Prob. 29PCh. 2 - Prob. 30PCh. 2 - Prob. 31PCh. 2 - Prob. 32PCh. 2 - Prob. 33PCh. 2 - Prob. 34PCh. 2 - Prob. 35PCh. 2 - Prob. 36PCh. 2 - Prob. 37PCh. 2 - Prob. 38PCh. 2 - Convert each hexadecimal number to decimal: 2316...Ch. 2 - Prob. 40PCh. 2 - Prob. 41PCh. 2 - Prob. 42PCh. 2 - Prob. 43PCh. 2 - Prob. 44PCh. 2 - Prob. 45PCh. 2 - Prob. 46PCh. 2 - Prob. 47PCh. 2 - Prob. 48PCh. 2 - Convert the following decimal numbers to BCD: 104...Ch. 2 - Prob. 50PCh. 2 - Convert each of the BCD numbers to decimal...Ch. 2 - Prob. 52PCh. 2 - Prob. 53PCh. 2 - Prob. 54PCh. 2 - In a certain application a 4-bit binary sequence...Ch. 2 - Prob. 56PCh. 2 - Prob. 57PCh. 2 - Prob. 58PCh. 2 - Prob. 59PCh. 2 - Prob. 60PCh. 2 - Prob. 61PCh. 2 - Prob. 62PCh. 2 - Prob. 63PCh. 2 - Prob. 64PCh. 2 - Prob. 65PCh. 2 - Prob. 66PCh. 2 - Prob. 67PCh. 2 - Prob. 68PCh. 2 - Prob. 69P
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