We use analog and digital signals in our everyday lives with the radio, the cell phone and with our own computers. our computers and our cell phones are all digital now but radio's are still considered analog. Radio telescopes explore space by using radio waves and signals to almost like scan space and collect data like a sonar in a submarine.
Answer:
(D) Network Standard.
Explanation:
Networking standards ensures the ability of networking technologies by defining the guidelines of communication that specify way computer access the medium they are attached.Network standards also defines which type of transmission transmission to use wireless or wired,which media to use etc.
Advantages of a Wireless Network<span> over Wired. As I mentioned in the introduction, the main </span>advantage of a wireless network<span> over a wired </span>one<span> is that users can move around freely within the area of the </span>network <span>with their laptops, handheld devices etc and get an internet connection.</span>
Explanation:
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Answer:
In Java:
import java.util.*;
public class Main{
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
String isbn;
System.out.print("First 1:2 digits: ");
isbn = input.nextLine();
if(isbn.length()==12){
int chksum = 0;
for(int i = 0; i<12;i++){
if((i+1)%2==0){ chksum+= 3 * Character.getNumericValue(isbn.charAt(i)); }
else{ chksum+=Character.getNumericValue(isbn.charAt(i)); } }
chksum%=10;
chksum=10-chksum;
if(chksum==10){
System.out.print("The ISBN-13 number is "+isbn+"0");}
else{
System.out.print("The ISBN-13 number is "+isbn+""+chksum); } }
else{
System.out.print("Invalid Input");
} }}
Explanation:
See attachment for explanation where comments are used to explain each line
